diff --git a/app/Http/Requests/System/CreateUser.php b/app/Http/Requests/System/CreateUser.php
index 2dbd27296..87cfd3508 100644
--- a/app/Http/Requests/System/CreateUser.php
+++ b/app/Http/Requests/System/CreateUser.php
@@ -7,7 +7,7 @@ class CreateUser extends SaveUser
     public function rules(): array
     {
         return array_merge(parent::rules(), [
-            'gid' => 'integer|required_unless:user_group,1',
+            'gid' => 'integer|required_unless:user_group,true',
             'system' => 'boolean|nullable',
             'create_home' => 'boolean',
             'user_group' => 'boolean',