diff --git a/app/api/controller/Merchant.php b/app/api/controller/Merchant.php
index 5bf0102d..77d40d46 100644
--- a/app/api/controller/Merchant.php
+++ b/app/api/controller/Merchant.php
@@ -129,8 +129,10 @@ class Merchant extends Controller
      */
     public function list(): Json {
         $model = new MerchantModel;
-        $pageSize = $this->request->get('pageSize', 15);
-        $sort = $this->request->get('sort', "merchant_id");
+        $pageSize = $this->request->param('pageSize');
+        $pageSize = empty($pageSize) ?? 15;
+        $sort = $this->request->param('sort');
+        $sort = empty($sort) ?? "merchant_id";
         $list = $model->getList($this->request->param(), intval($pageSize), $sort)->toArray();
 
         foreach ($list['data'] as $kr => $r) {