diff --git a/backend/apps/system/api/user.py b/backend/apps/system/api/user.py
index 0cf26d34..9d9644cd 100644
--- a/backend/apps/system/api/user.py
+++ b/backend/apps/system/api/user.py
@@ -120,11 +120,11 @@ async def query(session: SessionDep, trans: Trans, id: int) -> UserEditor:
 @router.post("")
 async def create(session: SessionDep, creator: UserCreator, trans: Trans):
     if check_account_exists(session=session, account=creator.account):
-        raise Exception(trans('i18n_exist', msg = f"{trans('i18n_user.account') [{creator.account}]}"))
+        raise Exception(trans('i18n_exist', msg = f"{trans('i18n_user.account')} [{creator.account}]"))
     if check_email_exists(session=session, email=creator.email):
-        raise Exception(trans('i18n_exist', msg = f"{trans('i18n_user.email') [{creator.email}]}"))
+        raise Exception(trans('i18n_exist', msg = f"{trans('i18n_user.email')} [{creator.email}]"))
     if not check_email_format(creator.email):
-        raise Exception(trans('i18n_format_invalid', key = f"{trans('i18n_user.email') [{creator.email}]}"))
+        raise Exception(trans('i18n_format_invalid', key = f"{trans('i18n_user.email')} [{creator.email}]"))
     data = creator.model_dump(exclude_unset=True)
     user_model = UserModel.model_validate(data)
     #user_model.create_time = get_timestamp()
@@ -154,9 +154,9 @@ async def update(session: SessionDep, editor: UserEditor, trans: Trans):
     if editor.account != user_model.account:
         raise Exception(f"account cannot be changed!")
     if editor.email != user_model.email and check_email_exists(session=session, account=editor.email):
-        raise Exception(trans('i18n_exist', msg = f"{trans('i18n_user.email') [{editor.email}]}"))
+        raise Exception(trans('i18n_exist', msg = f"{trans('i18n_user.email')} [{editor.email}]"))
     if not check_email_format(editor.email):
-        raise Exception(trans('i18n_format_invalid', key = f"{trans('i18n_user.email') [{editor.email}]}"))
+        raise Exception(trans('i18n_format_invalid', key = f"{trans('i18n_user.email')} [{editor.email}]"))
     origin_oid: int = user_model.oid
     del_stmt = sqlmodel_delete(UserWsModel).where(UserWsModel.uid == editor.id)
     session.exec(del_stmt)
diff --git a/backend/common/utils/locale.py b/backend/common/utils/locale.py
index eb107548..67a0d97c 100644
--- a/backend/common/utils/locale.py
+++ b/backend/common/utils/locale.py
@@ -45,9 +45,9 @@ class I18nHelper:
         
         return current if isinstance(current, str) else key_path
 
-    def __call__(self, key: str, **kwargs) -> str:
+    def __call__(self, arg_key: str, **kwargs) -> str:
         lang_data = self.i18n.translations.get(self.lang, {})
-        text = self._get_nested_translation(lang_data, key)
+        text = self._get_nested_translation(lang_data, arg_key)
         
         if kwargs:
             try: