diff --git a/webapp/controller/ShopController.class.php b/webapp/controller/ShopController.class.php
index 60d6f36b..b9029905 100644
--- a/webapp/controller/ShopController.class.php
+++ b/webapp/controller/ShopController.class.php
@@ -900,7 +900,7 @@ class ShopController extends BaseAuthedController
                 break;
             case ShopController::TOTAL_BUY_LIMIT: {
                     // error_log("total buy limit " . $address . " " . $id . " " . $row['limit_num']);
-                    $buyRecord = getXVal($buyRecordHash, $id);
+                    $buyRecord = getXVal($buyRecordHash, $goods_id);
                     $boughtTimes = $buyRecord ? $buyRecord['total_buy_times'] + 1 : 1;
                     if ($buyRecord && getXVal($buyRecord, 'total_buy_times', 0) >= $row['limit_num']) {
                         $this->_rspErr(2, 'Purchase limit reached');