diff --git a/webapp/controller/MarketController.class.php b/webapp/controller/MarketController.class.php
index bf7fff39..db72e722 100644
--- a/webapp/controller/MarketController.class.php
+++ b/webapp/controller/MarketController.class.php
@@ -690,7 +690,7 @@ class MarketController extends BaseController {
 
     public function listSellNfts()
     {
-        $account = getReqVal('account', '');
+        $account = strtolower(getReqVal('account', ''));
         $token = getReqVal('token', '');
         $start = getReqVal('start', 0);
         $page_size = getReqVal('page_size', 10);