diff --git a/webapp/controller/MarketController.class.php b/webapp/controller/MarketController.class.php
index 783f8128..eee4f615 100644
--- a/webapp/controller/MarketController.class.php
+++ b/webapp/controller/MarketController.class.php
@@ -554,6 +554,10 @@ class MarketController extends BaseAuthedController
                 'c_id' => $c_id,
             )
         );
+        if (!$r) {
+            $this->_rspErr(3, "sell failed");
+            return;
+        }
         $lastId = $this->lastInsertId($conn);
         $order_id = $this->genOrderId($lastId);
         $test = SqlHelper::update($conn, 't_market_store', array('idx' => $lastId), array('order_id' => $order_id));