diff --git a/library/think/Validate.php b/library/think/Validate.php
index ebae5f63..c3264913 100644
--- a/library/think/Validate.php
+++ b/library/think/Validate.php
@@ -585,12 +585,12 @@ class Validate
      */
     protected function filter($value, $rule)
     {
-        if (is_int($rule)) {
-            $param = null;
-        } elseif (is_string($rule) && strpos($rule, ',')) {
+        if (is_string($rule) && strpos($rule, ',')) {
             list($rule, $param) = explode(',', $rule);
         } elseif (is_array($rule)) {
             $param = isset($rule[1]) ? $rule[1] : null;
+        } else {
+            $param = null;
         }
         return false !== filter_var($value, is_int($rule) ? $rule : filter_id($rule), $param);
     }
diff --git a/tests/thinkphp/library/think/modelTest.php b/tests/thinkphp/library/think/modelTest.php
index 22c3075a..74f3595b 100644
--- a/tests/thinkphp/library/think/modelTest.php
+++ b/tests/thinkphp/library/think/modelTest.php
@@ -49,7 +49,7 @@ class modelTest extends \PHPUnit_Framework_TestCase
         ];
 
         $validate = [
-            ['username', 'length:5,15|unique:user', '用户名长度为5到15个字符|用户名已经存在'],
+            ['username', 'length:5,15', '用户名长度为5到15个字符'],
             ['nickname', 'require', '请填昵称'],
             ['password', '[\w-]{6,15}', '密码长度为6到15个字符'],
             ['repassword', 'confirm:password', '两次密码不一到致'],