diff --git a/library/think/Model.php b/library/think/Model.php
index b3f85b76..7459e315 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -1230,7 +1230,7 @@ class Model
             }
         }
         // 验证失败返回错误信息
-        return (is_array($result) || true === $result) ? $result : $msg;
+        return (false !== $result) ? $result : $msg;
     }
 
     /**