From fcb35cc3ebb3556093bcbfb299763c36ae7b8b22 Mon Sep 17 00:00:00 2001
From: Ritchie Martori <skawful@gmail.com>
Date: Fri, 11 Oct 2013 18:37:45 -0700
Subject: [PATCH] Fix prototype mixin bug

---
 lib/jutil.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/jutil.js b/lib/jutil.js
index d5b9e59b..198b65e8 100644
--- a/lib/jutil.js
+++ b/lib/jutil.js
@@ -57,7 +57,7 @@ exports.mixin = function (newClass, mixinClass, options) {
     if (options.instanceProperties) {
         if (mixinClass.prototype) {
             Object.keys(mixinClass.prototype).forEach(function (instanceProp) {
-                if (!newClass.hasOwnProperty(instanceProp) || options.override) {
+                if (!newClass.prototype.hasOwnProperty(instanceProp) || options.override) {
                     var pd = Object.getOwnPropertyDescriptor(mixinClass.prototype, instanceProp);
                     Object.defineProperty(newClass.prototype, instanceProp, pd);
                 }