diff --git a/webapp/controller/MarketController.class.php b/webapp/controller/MarketController.class.php
index 30022331..d4ac152c 100644
--- a/webapp/controller/MarketController.class.php
+++ b/webapp/controller/MarketController.class.php
@@ -22,6 +22,7 @@ require_once('services/ActivateNftService.php');
 
 require_once('phpcommon/bchelper.php');
 
+use phpcommon;
 use phpcommon\SqlHelper;
 use models\BoxOrder;
 use models\Nft;