diff --git a/packages/core/src/Actions/Channels/DeleteChannel.php b/packages/core/src/Actions/Channels/DeleteChannel.php
index 0089f30593..2c6e3505ab 100644
--- a/packages/core/src/Actions/Channels/DeleteChannel.php
+++ b/packages/core/src/Actions/Channels/DeleteChannel.php
@@ -9,11 +9,16 @@
 /**
  * Delete a channel. Channels with order history are kept — mark them
  * Inactive in the admin instead — so historical orders keep their context.
+ * The default channel is also kept: make another channel the default first.
  */
 class DeleteChannel implements DeletesChannel
 {
     public function execute(Channel $channel): void
     {
+        if ($channel->default) {
+            throw new ChannelActionException('Cannot delete the default channel. Make another channel the default first.');
+        }
+
         if ($channel->hasOrderHistory()) {
             throw new ChannelActionException('Cannot delete a channel with order history.');
         }
diff --git a/packages/core/src/Actions/Channels/UpdateChannel.php b/packages/core/src/Actions/Channels/UpdateChannel.php
index fa944ac91b..2118aa70ef 100644
--- a/packages/core/src/Actions/Channels/UpdateChannel.php
+++ b/packages/core/src/Actions/Channels/UpdateChannel.php
@@ -3,10 +3,13 @@
 namespace Lunar\Core\Actions\Channels;
 
 use Lunar\Core\Contracts\Actions\Channels\UpdatesChannel;
+use Lunar\Core\Exceptions\ChannelActionException;
 use Lunar\Core\Models\Channel;
 
 /**
  * Update a channel, ensuring at most one channel is ever marked default.
+ * The default flag moves by promoting another channel, never by unsetting —
+ * so a store with channels always has a default.
  */
 class UpdateChannel implements UpdatesChannel
 {
@@ -15,6 +18,10 @@ class UpdateChannel implements UpdatesChannel
      */
     public function execute(Channel $channel, array $attributes): Channel
     {
+        if ($channel->default && array_key_exists('default', $attributes) && ! $attributes['default']) {
+            throw new ChannelActionException('Cannot unset the default channel. Make another channel the default instead.');
+        }
+
         $attributes['handle'] ??= $attributes['name'] ?? $channel->handle;
 
         if ($attributes['default'] ?? false) {
diff --git a/packages/panel/resources/js/components/Toggle.test.ts b/packages/panel/resources/js/components/Toggle.test.ts
new file mode 100644
index 0000000000..6f2bc967af
--- /dev/null
+++ b/packages/panel/resources/js/components/Toggle.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, it } from 'vitest';
+import { mount } from '@vue/test-utils';
+import Toggle from './Toggle.vue';
+
+describe('Toggle', () => {
+    it('emits toggle when the switch is clicked', async () => {
+        const wrapper = mount(Toggle, { props: { on: false } });
+
+        await wrapper.find('button').trigger('click');
+
+        expect(wrapper.emitted('toggle')).toHaveLength(1);
+    });
+
+    it('emits toggle when clicked while on', async () => {
+        const wrapper = mount(Toggle, { props: { on: true } });
+
+        await wrapper.find('button').trigger('click');
+
+        expect(wrapper.emitted('toggle')).toHaveLength(1);
+    });
+
+    it('does not emit toggle when disabled', async () => {
+        const wrapper = mount(Toggle, { props: { on: true, disabled: true } });
+
+        await wrapper.find('button').trigger('click');
+
+        expect(wrapper.emitted('toggle')).toBeUndefined();
+    });
+
+    it('reflects the on prop in the switch state', () => {
+        expect(mount(Toggle, { props: { on: true } }).find('button').attributes('data-state')).toBe('checked');
+        expect(mount(Toggle, { props: { on: false } }).find('button').attributes('data-state')).toBe('unchecked');
+    });
+});
diff --git a/packages/panel/resources/js/components/Toggle.vue b/packages/panel/resources/js/components/Toggle.vue
index c82c229f09..63d89af542 100644
--- a/packages/panel/resources/js/components/Toggle.vue
+++ b/packages/panel/resources/js/components/Toggle.vue
@@ -1,18 +1,20 @@
 <script setup lang="ts">
 import { SwitchRoot, SwitchThumb } from 'reka-ui';
 
-defineProps<{ on?: boolean }>();
+defineProps<{ on?: boolean; disabled?: boolean }>();
 const emit = defineEmits<{ toggle: [] }>();
 </script>
 
 <template>
     <SwitchRoot
-        :checked="on"
+        :model-value="on"
+        :disabled="disabled"
         :class="[
-            'relative inline-block w-[34px] h-5 rounded-full cursor-pointer transition-colors duration-150 shrink-0 border border-transparent focus-visible:outline-none focus-visible:ring-3 focus-visible:ring-sage/35',
+            'relative inline-block w-[34px] h-5 rounded-full transition-colors duration-150 shrink-0 border border-transparent focus-visible:outline-none focus-visible:ring-3 focus-visible:ring-sage/35',
+            disabled ? 'cursor-not-allowed opacity-50' : 'cursor-pointer',
             on ? 'bg-ink-900' : 'bg-line-strong',
         ]"
-        @update:checked="emit('toggle')"
+        @update:model-value="emit('toggle')"
     >
         <SwitchThumb
             :class="[
diff --git a/packages/panel/resources/js/pages/settings/channels/Edit.vue b/packages/panel/resources/js/pages/settings/channels/Edit.vue
index 27e6e72539..a9cd1e24cc 100644
--- a/packages/panel/resources/js/pages/settings/channels/Edit.vue
+++ b/packages/panel/resources/js/pages/settings/channels/Edit.vue
@@ -47,6 +47,13 @@ const submit = (): void => {
     form.put(props.urls.update);
 };
 
+// The default channel cannot be deleted or un-defaulted; promote another channel instead.
+const deleteBlockedReason = computed<string>(() => {
+    if (props.channel.default) return t('channels.delete_blocked_default');
+    if (props.hasOrderHistory) return t('channels.delete_blocked');
+    return '';
+});
+
 const deleting = ref(false);
 
 const confirmDestroy = (): void => {
@@ -57,8 +64,8 @@ const confirmDestroy = (): void => {
 <template>
     <SettingsShell :title="t('channels.edit_title', { name: channel.name })" :breadcrumbs="breadcrumbs">
         <template #actions>
-            <Tooltip :text="hasOrderHistory ? t('channels.delete_blocked') : ''">
-                <Button variant="ghost" icon="trash" :disabled="hasOrderHistory" @click="deleting = true">{{ t('common.delete') }}</Button>
+            <Tooltip :text="deleteBlockedReason">
+                <Button variant="ghost" icon="trash" :disabled="!!deleteBlockedReason" @click="deleting = true">{{ t('common.delete') }}</Button>
             </Tooltip>
             <Button variant="primary" icon="check" size="sm" :disabled="form.processing" @click="submit">{{ t('common.save') }}</Button>
         </template>
@@ -84,11 +91,13 @@ const confirmDestroy = (): void => {
 
         <Section :title="t('channels.section_state')">
             <div class="flex flex-col gap-4">
-                <label class="flex items-center gap-3 cursor-pointer">
-                    <Toggle :on="form.default" @toggle="form.default = !form.default" />
+                <label class="flex items-center gap-3" :class="channel.default ? 'cursor-not-allowed' : 'cursor-pointer'">
+                    <Toggle :on="form.default" :disabled="channel.default" @toggle="form.default = !form.default" />
                     <div>
                         <div class="text-[12.5px] text-ink-900 font-medium">{{ t('channels.default_channel') }}</div>
-                        <div class="text-[11px] text-ink-500">{{ t('channels.default_channel_hint') }}</div>
+                        <div class="text-[11px] text-ink-500">
+                            {{ channel.default ? t('channels.default_locked_hint') : t('channels.default_channel_hint') }}
+                        </div>
                     </div>
                 </label>
                 <div class="max-w-[220px]">
diff --git a/packages/panel/resources/lang/ar/channels.php b/packages/panel/resources/lang/ar/channels.php
index 070618eba2..12107182da 100644
--- a/packages/panel/resources/lang/ar/channels.php
+++ b/packages/panel/resources/lang/ar/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'الحالة',
     'default_channel' => 'القناة الافتراضية',
     'default_channel_hint' => 'يُستخدم عندما لا يحدد الطلب قناة بشكل صريح.',
+    'default_locked_hint' => 'هذه هي القناة الافتراضية. لتغييرها، اجعل قناة أخرى هي الافتراضية.',
+    'default_unset_blocked' => 'لا يمكن إلغاء تعيين القناة الافتراضية. اجعل قناة أخرى هي الافتراضية بدلاً من ذلك.',
 
     'section_details' => 'التفاصيل',
     'section_state' => 'الحالة',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'هل تريد حذف القناة؟',
     'confirm_delete_body' => 'سيتم حذف "{name}" نهائيًا.',
     'delete_blocked' => 'لا يمكن حذف قناة لها سجل طلبات.',
+    'delete_blocked_default' => 'لا يمكن حذف القناة الافتراضية. اجعل قناة أخرى هي الافتراضية أولاً.',
 
     'flash_created' => 'تم إنشاء القناة.',
     'flash_updated' => 'تم تحديث القناة.',
diff --git a/packages/panel/resources/lang/bg/channels.php b/packages/panel/resources/lang/bg/channels.php
index a31a0f7f7f..4e6c18c601 100644
--- a/packages/panel/resources/lang/bg/channels.php
+++ b/packages/panel/resources/lang/bg/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Статус',
     'default_channel' => 'Канал по подразбиране',
     'default_channel_hint' => 'Използва се, когато заявката не избере изрично друг.',
+    'default_locked_hint' => 'Това е каналът по подразбиране. За да го промените, направете друг канал по подразбиране.',
+    'default_unset_blocked' => 'Каналът по подразбиране не може да бъде премахнат. Вместо това направете друг канал по подразбиране.',
 
     'section_details' => 'Детайли',
     'section_state' => 'Състояние',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Изтриване на канал?',
     'confirm_delete_body' => '"{name}" ще бъде премахнат за постоянно.',
     'delete_blocked' => 'Не може да се изтрие канал с история на поръчки.',
+    'delete_blocked_default' => 'Каналът по подразбиране не може да бъде изтрит. Първо направете друг канал по подразбиране.',
 
     'flash_created' => 'Каналът е създаден.',
     'flash_updated' => 'Каналът е актуализиран.',
diff --git a/packages/panel/resources/lang/de/channels.php b/packages/panel/resources/lang/de/channels.php
index 2c74b99a8f..157c56765b 100644
--- a/packages/panel/resources/lang/de/channels.php
+++ b/packages/panel/resources/lang/de/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Status',
     'default_channel' => 'Standardkanal',
     'default_channel_hint' => 'Wird verwendet, wenn eine Anfrage keinen explizit auswählt.',
+    'default_locked_hint' => 'Dies ist der Standardkanal. Um dies zu ändern, machen Sie einen anderen Kanal zum Standard.',
+    'default_unset_blocked' => 'Der Standardkanal kann nicht deaktiviert werden. Machen Sie stattdessen einen anderen Kanal zum Standard.',
 
     'section_details' => 'Details',
     'section_state' => 'Status',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Kanal löschen?',
     'confirm_delete_body' => '"{name}" wird dauerhaft entfernt.',
     'delete_blocked' => 'Ein Kanal mit Bestellhistorie kann nicht gelöscht werden.',
+    'delete_blocked_default' => 'Der Standardkanal kann nicht gelöscht werden. Machen Sie zuerst einen anderen Kanal zum Standard.',
 
     'flash_created' => 'Kanal erstellt.',
     'flash_updated' => 'Kanal aktualisiert.',
diff --git a/packages/panel/resources/lang/en/channels.php b/packages/panel/resources/lang/en/channels.php
index 034cd7f4d6..7a3fba3e81 100644
--- a/packages/panel/resources/lang/en/channels.php
+++ b/packages/panel/resources/lang/en/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Status',
     'default_channel' => 'Default channel',
     'default_channel_hint' => "Used when a request doesn't pick one explicitly.",
+    'default_locked_hint' => 'This is the default channel. To change it, make another channel the default.',
+    'default_unset_blocked' => 'The default channel cannot be unset. Make another channel the default instead.',
 
     'section_details' => 'Details',
     'section_state' => 'State',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Delete channel?',
     'confirm_delete_body' => '"{name}" will be permanently removed.',
     'delete_blocked' => 'Cannot delete a channel with order history.',
+    'delete_blocked_default' => 'The default channel cannot be deleted. Make another channel the default first.',
 
     'flash_created' => 'Channel created.',
     'flash_updated' => 'Channel updated.',
diff --git a/packages/panel/resources/lang/es/channels.php b/packages/panel/resources/lang/es/channels.php
index e50fa9ee7f..6308dcb558 100644
--- a/packages/panel/resources/lang/es/channels.php
+++ b/packages/panel/resources/lang/es/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Estado',
     'default_channel' => 'Canal predeterminado',
     'default_channel_hint' => 'Se utiliza cuando una solicitud no selecciona uno explícitamente.',
+    'default_locked_hint' => 'Este es el canal predeterminado. Para cambiarlo, establece otro canal como predeterminado.',
+    'default_unset_blocked' => 'No se puede desactivar el canal predeterminado. Establece otro canal como predeterminado en su lugar.',
 
     'section_details' => 'Detalles',
     'section_state' => 'Estado',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => '¿Eliminar canal?',
     'confirm_delete_body' => '"{name}" se eliminará permanentemente.',
     'delete_blocked' => 'No se puede eliminar un canal con historial de pedidos.',
+    'delete_blocked_default' => 'No se puede eliminar el canal predeterminado. Establece primero otro canal como predeterminado.',
 
     'flash_created' => 'Canal creado.',
     'flash_updated' => 'Canal actualizado.',
diff --git a/packages/panel/resources/lang/fa/channels.php b/packages/panel/resources/lang/fa/channels.php
index 01e323e859..cbadf34bee 100644
--- a/packages/panel/resources/lang/fa/channels.php
+++ b/packages/panel/resources/lang/fa/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'وضعیت',
     'default_channel' => 'کانال پیش‌فرض',
     'default_channel_hint' => 'زمانی استفاده می‌شود که یک درخواست به‌طور صریح کانالی را انتخاب نکند.',
+    'default_locked_hint' => 'این کانال پیش‌فرض است. برای تغییر آن، کانال دیگری را پیش‌فرض کنید.',
+    'default_unset_blocked' => 'کانال پیش‌فرض را نمی‌توان غیرفعال کرد. در عوض کانال دیگری را پیش‌فرض کنید.',
 
     'section_details' => 'جزئیات',
     'section_state' => 'وضعیت',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'کانال حذف شود؟',
     'confirm_delete_body' => '"{name}" به‌طور دائم حذف خواهد شد.',
     'delete_blocked' => 'حذف کانالی که دارای سابقه سفارش است امکان‌پذیر نیست.',
+    'delete_blocked_default' => 'کانال پیش‌فرض قابل حذف نیست. ابتدا کانال دیگری را پیش‌فرض کنید.',
 
     'flash_created' => 'کانال ایجاد شد.',
     'flash_updated' => 'کانال به‌روزرسانی شد.',
diff --git a/packages/panel/resources/lang/fr/channels.php b/packages/panel/resources/lang/fr/channels.php
index 1e21db5f8e..fbe551d331 100644
--- a/packages/panel/resources/lang/fr/channels.php
+++ b/packages/panel/resources/lang/fr/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Statut',
     'default_channel' => 'Canal par défaut',
     'default_channel_hint' => "Utilisé lorsqu'une requête n'en sélectionne pas explicitement.",
+    'default_locked_hint' => 'Ceci est le canal par défaut. Pour le changer, définissez un autre canal par défaut.',
+    'default_unset_blocked' => 'Impossible de désactiver le canal par défaut. Définissez plutôt un autre canal par défaut.',
 
     'section_details' => 'Détails',
     'section_state' => 'État',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Supprimer le canal ?',
     'confirm_delete_body' => '« {name} » sera définitivement supprimé.',
     'delete_blocked' => 'Impossible de supprimer un canal ayant un historique de commandes.',
+    'delete_blocked_default' => "Impossible de supprimer le canal par défaut. Définissez d'abord un autre canal par défaut.",
 
     'flash_created' => 'Canal créé.',
     'flash_updated' => 'Canal mis à jour.',
diff --git a/packages/panel/resources/lang/hr/channels.php b/packages/panel/resources/lang/hr/channels.php
index bbbfcaaca7..ed71ed2494 100644
--- a/packages/panel/resources/lang/hr/channels.php
+++ b/packages/panel/resources/lang/hr/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Status',
     'default_channel' => 'Zadani kanal',
     'default_channel_hint' => 'Koristi se kada zahtjev izričito ne odabere kanal.',
+    'default_locked_hint' => 'Ovo je zadani kanal. Da biste to promijenili, postavite drugi kanal kao zadani.',
+    'default_unset_blocked' => 'Zadani kanal nije moguće poništiti. Umjesto toga postavite drugi kanal kao zadani.',
 
     'section_details' => 'Detalji',
     'section_state' => 'Stanje',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Izbrisati kanal?',
     'confirm_delete_body' => '"{name}" bit će trajno uklonjen.',
     'delete_blocked' => 'Nije moguće izbrisati kanal s poviješću narudžbi.',
+    'delete_blocked_default' => 'Zadani kanal nije moguće izbrisati. Najprije postavite drugi kanal kao zadani.',
 
     'flash_created' => 'Kanal je kreiran.',
     'flash_updated' => 'Kanal je ažuriran.',
diff --git a/packages/panel/resources/lang/hu/channels.php b/packages/panel/resources/lang/hu/channels.php
index d04d6979fa..85d60542df 100644
--- a/packages/panel/resources/lang/hu/channels.php
+++ b/packages/panel/resources/lang/hu/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Állapot',
     'default_channel' => 'Alapértelmezett csatorna',
     'default_channel_hint' => 'Akkor kerül felhasználásra, ha egy kérés nem választ ki kifejezetten egyet.',
+    'default_locked_hint' => 'Ez az alapértelmezett csatorna. A módosításhoz tegyen egy másik csatornát alapértelmezetté.',
+    'default_unset_blocked' => 'Az alapértelmezett csatorna nem kapcsolható ki. Tegyen inkább egy másik csatornát alapértelmezetté.',
 
     'section_details' => 'Részletek',
     'section_state' => 'Állapot',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Törli a csatornát?',
     'confirm_delete_body' => '"{name}" véglegesen eltávolításra kerül.',
     'delete_blocked' => 'Nem törölhető olyan csatorna, amelynek rendelési előzményei vannak.',
+    'delete_blocked_default' => 'Az alapértelmezett csatorna nem törölhető. Előbb tegyen egy másik csatornát alapértelmezetté.',
 
     'flash_created' => 'A csatorna létrehozva.',
     'flash_updated' => 'A csatorna frissítve.',
diff --git a/packages/panel/resources/lang/mn/channels.php b/packages/panel/resources/lang/mn/channels.php
index 81de023033..9f23df7f8d 100644
--- a/packages/panel/resources/lang/mn/channels.php
+++ b/packages/panel/resources/lang/mn/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Төлөв',
     'default_channel' => 'Үндсэн суваг',
     'default_channel_hint' => 'Хүсэлт тодорхой суваг сонгоогүй үед ашиглагдана.',
+    'default_locked_hint' => 'Энэ бол үндсэн суваг. Өөрчлөхийн тулд өөр сувгийг үндсэн болгоно уу.',
+    'default_unset_blocked' => 'Үндсэн сувгийг болиулах боломжгүй. Оронд нь өөр сувгийг үндсэн болгоно уу.',
 
     'section_details' => 'Дэлгэрэнгүй',
     'section_state' => 'Төлөв',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Сувгийг устгах уу?',
     'confirm_delete_body' => '"{name}" бүрмөсөн устах болно.',
     'delete_blocked' => 'Захиалгын түүхтэй сувгийг устгах боломжгүй.',
+    'delete_blocked_default' => 'Үндсэн сувгийг устгах боломжгүй. Эхлээд өөр сувгийг үндсэн болгоно уу.',
 
     'flash_created' => 'Суваг үүсгэгдлээ.',
     'flash_updated' => 'Суваг шинэчлэгдлээ.',
diff --git a/packages/panel/resources/lang/nl/channels.php b/packages/panel/resources/lang/nl/channels.php
index 8ab16177b4..d3db94c601 100644
--- a/packages/panel/resources/lang/nl/channels.php
+++ b/packages/panel/resources/lang/nl/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Status',
     'default_channel' => 'Standaardkanaal',
     'default_channel_hint' => 'Wordt gebruikt wanneer een verzoek er niet expliciet één kiest.',
+    'default_locked_hint' => 'Dit is het standaardkanaal. Maak een ander kanaal standaard om dit te wijzigen.',
+    'default_unset_blocked' => 'Het standaardkanaal kan niet worden uitgeschakeld. Maak in plaats daarvan een ander kanaal standaard.',
 
     'section_details' => 'Details',
     'section_state' => 'Status',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Kanaal verwijderen?',
     'confirm_delete_body' => '"{name}" wordt permanent verwijderd.',
     'delete_blocked' => 'Kan geen kanaal verwijderen met bestelgeschiedenis.',
+    'delete_blocked_default' => 'Het standaardkanaal kan niet worden verwijderd. Maak eerst een ander kanaal standaard.',
 
     'flash_created' => 'Kanaal aangemaakt.',
     'flash_updated' => 'Kanaal bijgewerkt.',
diff --git a/packages/panel/resources/lang/pl/channels.php b/packages/panel/resources/lang/pl/channels.php
index 81907de900..7bf490c68c 100644
--- a/packages/panel/resources/lang/pl/channels.php
+++ b/packages/panel/resources/lang/pl/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Status',
     'default_channel' => 'Domyślny kanał',
     'default_channel_hint' => 'Używany, gdy żądanie nie wybiera go jawnie.',
+    'default_locked_hint' => 'To jest domyślny kanał. Aby to zmienić, ustaw inny kanał jako domyślny.',
+    'default_unset_blocked' => 'Nie można wyłączyć domyślnego kanału. Zamiast tego ustaw inny kanał jako domyślny.',
 
     'section_details' => 'Szczegóły',
     'section_state' => 'Stan',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Usunąć kanał?',
     'confirm_delete_body' => '"{name}" zostanie trwale usunięty.',
     'delete_blocked' => 'Nie można usunąć kanału z historią zamówień.',
+    'delete_blocked_default' => 'Nie można usunąć domyślnego kanału. Najpierw ustaw inny kanał jako domyślny.',
 
     'flash_created' => 'Kanał utworzony.',
     'flash_updated' => 'Kanał zaktualizowany.',
diff --git a/packages/panel/resources/lang/pt_BR/channels.php b/packages/panel/resources/lang/pt_BR/channels.php
index 95a09f1ca1..acdf452b6f 100644
--- a/packages/panel/resources/lang/pt_BR/channels.php
+++ b/packages/panel/resources/lang/pt_BR/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Status',
     'default_channel' => 'Canal padrão',
     'default_channel_hint' => 'Usado quando uma solicitação não escolhe um explicitamente.',
+    'default_locked_hint' => 'Este é o canal padrão. Para alterá-lo, defina outro canal como padrão.',
+    'default_unset_blocked' => 'O canal padrão não pode ser desativado. Em vez disso, defina outro canal como padrão.',
 
     'section_details' => 'Detalhes',
     'section_state' => 'Estado',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Excluir canal?',
     'confirm_delete_body' => '"{name}" será removido permanentemente.',
     'delete_blocked' => 'Não é possível excluir um canal com histórico de pedidos.',
+    'delete_blocked_default' => 'O canal padrão não pode ser excluído. Defina outro canal como padrão primeiro.',
 
     'flash_created' => 'Canal criado.',
     'flash_updated' => 'Canal atualizado.',
diff --git a/packages/panel/resources/lang/ro/channels.php b/packages/panel/resources/lang/ro/channels.php
index 505cdb7e0f..5f8257d798 100644
--- a/packages/panel/resources/lang/ro/channels.php
+++ b/packages/panel/resources/lang/ro/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Stare',
     'default_channel' => 'Canal implicit',
     'default_channel_hint' => 'Folosit atunci când o solicitare nu alege unul în mod explicit.',
+    'default_locked_hint' => 'Acesta este canalul implicit. Pentru a-l schimba, setați un alt canal ca implicit.',
+    'default_unset_blocked' => 'Canalul implicit nu poate fi dezactivat. Setați în schimb un alt canal ca implicit.',
 
     'section_details' => 'Detalii',
     'section_state' => 'Stare',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Ștergi canalul?',
     'confirm_delete_body' => '"{name}" va fi eliminat definitiv.',
     'delete_blocked' => 'Nu poți șterge un canal care are istoric de comenzi.',
+    'delete_blocked_default' => 'Canalul implicit nu poate fi șters. Setați mai întâi un alt canal ca implicit.',
 
     'flash_created' => 'Canal creat.',
     'flash_updated' => 'Canal actualizat.',
diff --git a/packages/panel/resources/lang/tr/channels.php b/packages/panel/resources/lang/tr/channels.php
index 837b7836ae..cdc4e6fce9 100644
--- a/packages/panel/resources/lang/tr/channels.php
+++ b/packages/panel/resources/lang/tr/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Durum',
     'default_channel' => 'Varsayılan kanal',
     'default_channel_hint' => 'Bir istek açıkça birini seçmediğinde kullanılır.',
+    'default_locked_hint' => 'Bu varsayılan kanaldır. Değiştirmek için başka bir kanalı varsayılan yapın.',
+    'default_unset_blocked' => 'Varsayılan kanal kaldırılamaz. Bunun yerine başka bir kanalı varsayılan yapın.',
 
     'section_details' => 'Detaylar',
     'section_state' => 'Durum',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Kanal silinsin mi?',
     'confirm_delete_body' => '"{name}" kalıcı olarak kaldırılacak.',
     'delete_blocked' => 'Sipariş geçmişi olan bir kanal silinemez.',
+    'delete_blocked_default' => 'Varsayılan kanal silinemez. Önce başka bir kanalı varsayılan yapın.',
 
     'flash_created' => 'Kanal oluşturuldu.',
     'flash_updated' => 'Kanal güncellendi.',
diff --git a/packages/panel/resources/lang/vi/channels.php b/packages/panel/resources/lang/vi/channels.php
index b5908778b4..9f7a2b9b18 100644
--- a/packages/panel/resources/lang/vi/channels.php
+++ b/packages/panel/resources/lang/vi/channels.php
@@ -21,6 +21,8 @@
     'field_status' => 'Trạng thái',
     'default_channel' => 'Kênh mặc định',
     'default_channel_hint' => 'Được sử dụng khi một yêu cầu không chọn kênh cụ thể.',
+    'default_locked_hint' => 'Đây là kênh mặc định. Để thay đổi, hãy đặt một kênh khác làm mặc định.',
+    'default_unset_blocked' => 'Không thể bỏ đặt kênh mặc định. Thay vào đó, hãy đặt một kênh khác làm mặc định.',
 
     'section_details' => 'Chi tiết',
     'section_state' => 'Trạng thái',
@@ -30,6 +32,7 @@
     'confirm_delete_title' => 'Xóa kênh?',
     'confirm_delete_body' => '"{name}" sẽ bị xóa vĩnh viễn.',
     'delete_blocked' => 'Không thể xóa kênh có lịch sử đơn hàng.',
+    'delete_blocked_default' => 'Không thể xóa kênh mặc định. Hãy đặt một kênh khác làm mặc định trước.',
 
     'flash_created' => 'Đã tạo kênh.',
     'flash_updated' => 'Đã cập nhật kênh.',
diff --git a/packages/panel/src/Http/Controllers/Settings/ChannelEditController.php b/packages/panel/src/Http/Controllers/Settings/ChannelEditController.php
index c46b3658db..8c766c95d6 100644
--- a/packages/panel/src/Http/Controllers/Settings/ChannelEditController.php
+++ b/packages/panel/src/Http/Controllers/Settings/ChannelEditController.php
@@ -35,7 +35,11 @@ public function edit(Channel $channel): Response
 
     public function update(ChannelRequest $request, Channel $channel, UpdatesChannel $updatesChannel): RedirectResponse
     {
-        $updatesChannel->execute($channel, $request->channelAttributes());
+        try {
+            $updatesChannel->execute($channel, $request->channelAttributes());
+        } catch (ChannelActionException) {
+            return back()->with('error', __('panel::channels.default_unset_blocked'));
+        }
 
         return redirect()->route('panel.settings.channels.index')->with('success', __('panel::channels.flash_updated'));
     }
@@ -45,7 +49,9 @@ public function destroy(Channel $channel, DeletesChannel $deletesChannel): Redir
         try {
             $deletesChannel->execute($channel);
         } catch (ChannelActionException) {
-            return back()->with('error', __('panel::channels.delete_blocked'));
+            return back()->with('error', $channel->default
+                ? __('panel::channels.delete_blocked_default')
+                : __('panel::channels.delete_blocked'));
         }
 
         return redirect()->route('panel.settings.channels.index')->with('success', __('panel::channels.flash_deleted'));
diff --git a/specs/0049-inertia-panel.md b/specs/0049-inertia-panel.md
index 8e75644ff7..b86b68f1c0 100644
--- a/specs/0049-inertia-panel.md
+++ b/specs/0049-inertia-panel.md
@@ -276,7 +276,10 @@ Against the core `staff` guard (`Lunar\Core\Models\Staff`), configurable via
   `SettingsNav`.
 - **Channels** (settings section) — list on `DataTable`; inline create dialog; edit page
   (name, auto-slugged handle, URL, default toggle, status); delete with confirmation,
-  blocked when `Channel::hasOrderHistory()` is true.
+  blocked when `Channel::hasOrderHistory()` is true or the channel is the default. The
+  default flag moves by promoting another channel, never by unsetting, so a store with
+  channels always has a default — the core `UpdateChannel`/`DeleteChannel` actions enforce
+  both rules and the edit page disables the corresponding controls.
 
 ### Data layer and authorization
 
diff --git a/tests/core/Unit/Actions/Channels/DeleteChannelTest.php b/tests/core/Unit/Actions/Channels/DeleteChannelTest.php
index dfa318f5a8..b252138e09 100644
--- a/tests/core/Unit/Actions/Channels/DeleteChannelTest.php
+++ b/tests/core/Unit/Actions/Channels/DeleteChannelTest.php
@@ -10,8 +10,8 @@
 uses(TestCase::class);
 uses(RefreshDatabase::class);
 
-it('deletes a channel with no order history', function () {
-    $channel = Channel::factory()->create();
+it('deletes a non-default channel with no order history', function () {
+    $channel = Channel::factory()->create(['default' => false]);
 
     app(DeleteChannel::class)->execute($channel);
 
@@ -19,7 +19,7 @@
 });
 
 it('rejects deleting a channel with order history', function () {
-    $channel = Channel::factory()->create();
+    $channel = Channel::factory()->create(['default' => false]);
 
     Order::factory()->create(['channel_id' => $channel->id]);
 
@@ -27,7 +27,7 @@
 })->throws(ChannelActionException::class);
 
 it('does not delete a channel with order history', function () {
-    $channel = Channel::factory()->create();
+    $channel = Channel::factory()->create(['default' => false]);
 
     Order::factory()->create(['channel_id' => $channel->id]);
 
@@ -39,3 +39,21 @@
 
     expect(Channel::find($channel->id))->not->toBeNull();
 });
+
+it('rejects deleting the default channel', function () {
+    $channel = Channel::factory()->create(['default' => true]);
+
+    app(DeleteChannel::class)->execute($channel);
+})->throws(ChannelActionException::class);
+
+it('does not delete the default channel', function () {
+    $channel = Channel::factory()->create(['default' => true]);
+
+    try {
+        app(DeleteChannel::class)->execute($channel);
+    } catch (ChannelActionException) {
+        // expected
+    }
+
+    expect(Channel::find($channel->id))->not->toBeNull();
+});
diff --git a/tests/core/Unit/Actions/Channels/UpdateChannelTest.php b/tests/core/Unit/Actions/Channels/UpdateChannelTest.php
index fb8da88f39..7ef0d5970d 100644
--- a/tests/core/Unit/Actions/Channels/UpdateChannelTest.php
+++ b/tests/core/Unit/Actions/Channels/UpdateChannelTest.php
@@ -2,6 +2,7 @@
 
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Lunar\Core\Actions\Channels\UpdateChannel;
+use Lunar\Core\Exceptions\ChannelActionException;
 use Lunar\Core\Models\Channel;
 use Lunar\Tests\Core\TestCase;
 
@@ -58,3 +59,39 @@
 
     expect($channel->fresh()->default)->toBeTrue();
 });
+
+it('rejects unsetting default on the default channel', function () {
+    $channel = Channel::factory()->create(['default' => true]);
+
+    app(UpdateChannel::class)->execute($channel, [
+        'name' => $channel->name,
+        'default' => false,
+    ]);
+})->throws(ChannelActionException::class);
+
+it('keeps the default channel unchanged when unsetting default is rejected', function () {
+    $channel = Channel::factory()->create(['name' => 'Webstore', 'default' => true]);
+
+    try {
+        app(UpdateChannel::class)->execute($channel, [
+            'name' => 'Renamed',
+            'default' => false,
+        ]);
+    } catch (ChannelActionException) {
+        // expected
+    }
+
+    expect($channel->fresh()->default)->toBeTrue();
+    expect($channel->fresh()->name)->toBe('Webstore');
+});
+
+it('updates the default channel when default stays untouched', function () {
+    $channel = Channel::factory()->create(['default' => true]);
+
+    app(UpdateChannel::class)->execute($channel, [
+        'name' => 'Renamed',
+    ]);
+
+    expect($channel->fresh()->name)->toBe('Renamed');
+    expect($channel->fresh()->default)->toBeTrue();
+});
diff --git a/tests/panel/Feature/Settings/ChannelEditTest.php b/tests/panel/Feature/Settings/ChannelEditTest.php
index 8a3de58003..af12aff7c0 100644
--- a/tests/panel/Feature/Settings/ChannelEditTest.php
+++ b/tests/panel/Feature/Settings/ChannelEditTest.php
@@ -82,6 +82,30 @@
     expect(Channel::where('default', true)->count())->toBe(1);
 });
 
+test('unsetting default on the default channel is rejected with a flash error', function () {
+    $channel = Channel::factory()->create(['name' => 'Webstore', 'default' => true]);
+
+    $this->from(route('panel.settings.channels.edit', $channel))
+        ->put(route('panel.settings.channels.update', $channel), [
+            'name' => 'Webstore',
+            'default' => false,
+        ])->assertRedirect(route('panel.settings.channels.edit', $channel))
+        ->assertSessionHas('error', __('panel::channels.default_unset_blocked'));
+
+    expect($channel->fresh()->default)->toBeTrue();
+});
+
+test('the default channel cannot be deleted and shows a flash error', function () {
+    $channel = Channel::factory()->create(['default' => true]);
+
+    $this->from(route('panel.settings.channels.edit', $channel))
+        ->delete(route('panel.settings.channels.destroy', $channel))
+        ->assertRedirect(route('panel.settings.channels.edit', $channel))
+        ->assertSessionHas('error', __('panel::channels.delete_blocked_default'));
+
+    expect(Channel::find($channel->id))->not->toBeNull();
+});
+
 test('a channel with no order history can be deleted', function () {
     $channel = Channel::factory()->create(['default' => false]);