diff --git a/webapp/controller/RechargeController.class.php b/webapp/controller/RechargeController.class.php
index 1a6df7e..3f598b1 100644
--- a/webapp/controller/RechargeController.class.php
+++ b/webapp/controller/RechargeController.class.php
@@ -108,7 +108,7 @@ class RechargeController{
         
         $response = json_decode($rsp, true);
         $diamonds = $response['diamond'];
-        $diamond_num = 0;
+        $diamond_num = -1;
         if ($diamonds > 0) {
             $userrow = $conn->execQueryOne(
                 'SELECT diamond_num, free_diamond FROM user WHERE accountid=:accountid;',