diff --git a/webapp/models/Market.php b/webapp/models/Market.php
index 81c6526b..f57b83d0 100644
--- a/webapp/models/Market.php
+++ b/webapp/models/Market.php
@@ -23,7 +23,10 @@ class Market extends BaseModel {
     }
 
     public static function add($orderId, $netId, $tokenId, $seller, $nftToken,
-                               $amount, $currency, $pirce) {
+                               $amount, $currency, $pirce, $fieldsKv) {
+        if (empty($fieldsKv)) {
+            $fieldsKv = array();
+        }
         self::internalUpdate(
             $orderId,
             $netId,