diff --git a/webapp/controller/BlockChainController.class.php b/webapp/controller/BlockChainController.class.php
index 659d9692..5335cb95 100644
--- a/webapp/controller/BlockChainController.class.php
+++ b/webapp/controller/BlockChainController.class.php
@@ -377,12 +377,12 @@ class BlockChainController extends BaseAuthedController {
 
         $goodsUuid = getReqVal('goods_uuid', '');
         $price = getReqVal('price', '');
-        if (empty($s_price)) {
-            myself()-_rspErr(1, 's_price not found');
+        if (empty($price)) {
+            myself()-_rspErr(1, 'price not found');
             return;
         }
-        if (!is_numeric($s_price)) {
-            myself()-_rspErr(1, 's_price not number');
+        if (!is_numeric($price)) {
+            myself()-_rspErr(1, 'price not number');
             return;
         }
 
@@ -400,7 +400,7 @@ class BlockChainController extends BaseAuthedController {
         $response = services\BlockChainService::gameItemMarketBuy(
             Transaction::BUY_GOODS_FROM_MARKET_ACTION_TYPE,
             $goods['owner_address'],
-            $goods['s_price'],
+            $goods['price'],
             $goods['item_id'],
             $goods['amount']
         );