diff --git a/Controllers/ApiController.cs b/Controllers/ApiController.cs
index 8663324..9fd0801 100644
--- a/Controllers/ApiController.cs
+++ b/Controllers/ApiController.cs
@@ -66,7 +66,7 @@ namespace ad_login.Controllers
             else {
                 ret.ret = "no";
                 ret.err_code = "0003";
-                ret.message = "修改失敗，請確認帳號或密碼是否正確!";
+                ret.message = "修改失敗，請確認帳號或密碼是否正確! 或者是帳號為不得更改密碼的設定!";
                 return Content(JsonConvert.SerializeObject(ret), "application/json;charset=utf-8");
 
             }