diff --git a/webapp/controller/ShopController.class.php b/webapp/controller/ShopController.class.php
index b83750c4..2c1df301 100644
--- a/webapp/controller/ShopController.class.php
+++ b/webapp/controller/ShopController.class.php
@@ -215,6 +215,7 @@ class ShopController extends BaseAuthedController {
         $nowTime = myself()->_getNowTime();
         $fiatAmount = $goodsMeta['price'];
         $orderId = OrderId::gen();
+        $slat = uniqid();
         $params = array(
             $network,
             $crypto,
@@ -225,7 +226,8 @@ class ShopController extends BaseAuthedController {
             $country,
             myself()->_getAccountId(),
             $orderId,
-            $nowTime
+            $nowTime,
+            $salt
         );
         OutAppOrder::add(
             $orderId,