diff --git a/application/admin/controller/Ajax.php b/application/admin/controller/Ajax.php
index 1bf0fe8fe3476c3ea3e78b96f2c6c84b06c57a1b..649cc41de2539b8cc2c0847a95a8124c59b1fe89 100644
--- a/application/admin/controller/Ajax.php
+++ b/application/admin/controller/Ajax.php
@@ -146,7 +146,7 @@ class Ajax extends Backend
         //操作的数据表
         $table = $this->request->post("table");
         //排序的方式
-        $orderway = $this->request->post("orderway", 'strtolower');
+        $orderway = $this->request->post("orderway", "", 'strtolower');
         $orderway = $orderway == 'asc' ? 'ASC' : 'DESC';
         $sour = $weighdata = [];
         $ids = explode(',', $ids);