diff --git a/webapp/mt/Item.php b/webapp/mt/Item.php
index d2650a4a..af45d570 100644
--- a/webapp/mt/Item.php
+++ b/webapp/mt/Item.php
@@ -320,6 +320,8 @@ class Item {
             }
             }
         }
+        $heros = array_unique($heros);
+        $guns = array_unique($guns);
     }
 
     protected static function getMetaList()