diff --git a/packages/account-sdk/src/interface/public-utilities/spend-permission/utils.ts b/packages/account-sdk/src/interface/public-utilities/spend-permission/utils.ts
index eaf7fe31..a9774ac0 100644
--- a/packages/account-sdk/src/interface/public-utilities/spend-permission/utils.ts
+++ b/packages/account-sdk/src/interface/public-utilities/spend-permission/utils.ts
@@ -124,9 +124,9 @@ export function createSpendPermissionTypedDataWithSeconds(
 
   // Runtime check to prevent misuse
   if (process.env.NODE_ENV === 'production') {
-    console.warn(
-      '⚠️ createSpendPermissionTypedDataWithSeconds is being used. ' +
-        'This function is intended for testing purposes only.'
+    throw new Error(
+      'createSpendPermissionTypedDataWithSeconds is for testing only and must not be called in production. ' +
+        'Use createSpendPermissionTypedData with periodInDays instead.'
     );
   }