diff --git a/webapp/controller/BagController.class.php b/webapp/controller/BagController.class.php
index e2da21dd..74f54b0f 100644
--- a/webapp/controller/BagController.class.php
+++ b/webapp/controller/BagController.class.php
@@ -50,7 +50,7 @@ class BagController extends BaseAuthedController {
 
     public function createGuildConsume()
     {
-        $consume = explode("|",mt\Parameter::getVal('create_club_cost'));
+        $consume = explode("|",mt\Parameter::getVal('create_club_cost', ''));
         $costItems = array(
             array(
                 'item_id' => $consume[0],