diff --git a/lib/class.js b/lib/class.js
index cebf28d..038e3a1 100644
--- a/lib/class.js
+++ b/lib/class.js
@@ -61,7 +61,7 @@ exports.implement = function()
         dest = {},
         arg  = null,
 
-        abstract_list = []
+        abstract_list = [],
         implemented   = [];
 
     // add each of the interfaces