diff --git a/app/Logging/DiscordWebhookHandler.php b/app/Logging/DiscordWebhookHandler.php
index 4c5a754..9334cd2 100644
--- a/app/Logging/DiscordWebhookHandler.php
+++ b/app/Logging/DiscordWebhookHandler.php
@@ -6,6 +6,8 @@
 use Monolog\Level;
 use Monolog\LogRecord;
 use Spatie\DiscordAlerts\Facades\DiscordAlert;
+use function filter_var;
+use function is_string;
 
 class DiscordWebhookHandler extends AbstractProcessingHandler
 {
@@ -30,7 +32,15 @@ public function __construct(
 
     protected function write(LogRecord $record): void
     {
-        if ($record->level->isLowerThan($this->level)) return;
+        if ($record->level->isLowerThan($this->level)) {
+            return;
+        }
+
+        $webhookUrl = config('discord-alerts.webhook_urls.default');
+
+        if (! is_string($webhookUrl) || filter_var($webhookUrl, FILTER_VALIDATE_URL) === false) {
+            return;
+        }
 
         $emoji = self::LEVEL_EMOJIS[$record->level->getName()] ?? '📝';