diff --git a/app/common/model/Merchant.php b/app/common/model/Merchant.php
index 701776f1..d3c30aac 100644
--- a/app/common/model/Merchant.php
+++ b/app/common/model/Merchant.php
@@ -84,7 +84,7 @@ class Merchant extends BaseModel
      * @return \think\Paginator
      * @throws \think\db\exception\DbException
      */
-    public function getList(array $param = [], int $pageSize = 15, $sortField): \think\Paginator
+    public function getList(array $param = [], int $pageSize = 15, $sortField = "merchant_id"): \think\Paginator
     {
         $res = $this->with(['logoImage'])
                     ->where($this->getFilter($param))