gistfile1.diff

diff --git a/lib/utils.js b/lib/utils.js
index 229b16d..9d5b957 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -101,7 +101,7 @@ Extendable.extend = function(Child) {
 
     var Surrogate = function() {
         Array.prototype.unshift.call(arguments, this);
-        Child.apply(this, arguments);
+        return Child.apply(this, arguments);
     };
 
     return inherit(Parent, Surrogate);

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