diff --git a/webapp/models/BuyRecord.php b/webapp/models/BuyRecord.php
index a6e941e2..30deb041 100644
--- a/webapp/models/BuyRecord.php
+++ b/webapp/models/BuyRecord.php
@@ -29,7 +29,7 @@ class BuyRecord extends BaseModel {
                 'errmsg' => 'server internal error'
             )));
         }
-        $orderId = phpcommon\genOrderId($gameId, $funcId, $time, $lastIdx);
+        $orderId = phpcommon\genOrderId($gameId, $funcId, $time, $lastIdx, 0);
         if (!phpcommon\isValidOrderId($orderId)) {
             die(json_encode(array(
                 'errcode' => 500,