diff --git a/application/admin/controller/user/User.php b/application/admin/controller/user/User.php
index 86383727..2f12b67a 100644
--- a/application/admin/controller/user/User.php
+++ b/application/admin/controller/user/User.php
@@ -103,7 +103,7 @@ class User extends Backend
             }
         } else {
             $ids = explode(',', $ids);
-            if (!is_array($ids) || count($ids) == 0) {
+            if (!is_array($ids) || !$ids) {
                 $this->error(__('Invalid parameters'));
             }
             Db::startTrans();