diff --git a/src/lang/object.js b/src/lang/object.js
index <HASH>..<HASH> 100644
--- a/src/lang/object.js
+++ b/src/lang/object.js
@@ -61,33 +61,6 @@ if (!Object.defineProperty) {
     };
 }
 
-/**
- * Can be used to mix modules, to combine abilities
- * @name mixin
- * @memberOf external:Object#
- * @function
- * @param {Object} obj the object you want to throw in the mix
- */
-Object.defineProperty(Object.prototype, "mixin", {
-    value: function (obj) {
-        var i,
-        self = this;
-
-        // iterate over the mixin properties
-        for (i in obj) {
-            // if the current property belongs to the mixin
-            if (obj.hasOwnProperty(i)) {
-                // add the property to the mix
-                self[i] = obj[i];
-            }
-        }
-        // return the mixed object
-        return self;
-    },
-    enumerable : false,
-    configurable : false
-});
-
 if (typeof Object.create !== "function") {
     /**
      * Prototypal Inheritance Create Helper
[#<I>] Remove Object.prototype.mixin, as it creates a compatibility issue with other libraries (notably socket.io)

- This method is not used anywhere in melonJS core.
- keep melonJS lightweight! [#<I>]