diff --git a/packages/twenty-server/src/engine/decorators/auth/auth-user.decorator.ts b/packages/twenty-server/src/engine/decorators/auth/auth-user.decorator.ts
index 75f3a982e949..35d3ccc08da4 100644
--- a/packages/twenty-server/src/engine/decorators/auth/auth-user.decorator.ts
+++ b/packages/twenty-server/src/engine/decorators/auth/auth-user.decorator.ts
@@ -15,7 +15,9 @@ export const AuthUser = createParamDecorator(
     const request = getRequest(ctx);
 
     if (!options?.allowUndefined && !request.user) {
-      throw new ForbiddenException("You're not authorized to do this");
+      throw new ForbiddenException(
+        "You're not authorized to do this. Note: This endpoint requires a user and won't work with just an API key.",
+      );
     }
 
     return request.user;