diff --git a/library/think/Validate.php b/library/think/Validate.php
index 7a271296..d031adbc 100644
--- a/library/think/Validate.php
+++ b/library/think/Validate.php
@@ -561,7 +561,7 @@ class Validate
         if (isset($except)) {
             $map[$key] = ['neq', $except];
         }
-        if ($model->where($map)->find()) {
+        if ($model->where($map)->field($key)->find()) {
             return false;
         }
         return true;