diff --git a/src/pixi/utils/EventTarget.js b/src/pixi/utils/EventTarget.js
index bbc04b5..e59554f 100644
--- a/src/pixi/utils/EventTarget.js
+++ b/src/pixi/utils/EventTarget.js
@@ -38,9 +38,6 @@
      * @param object {Object} The obj to mix into
      */
     mixin: function mixin(obj) {
-        //local tracker for this object's listeners
-        var _listeners = {};
-
         /**
          * Return a list of assigned event listeners.
          *
@@ -49,7 +46,9 @@
          * @returns {Array} An array of listener functions
          */
         obj.listeners = function listeners(eventName) {
-            return _listeners[eventName] ? _listeners[eventName].slice() : [];
+            this._listeners = this._listeners || {};
+
+            return this._listeners[eventName] ? this._listeners[eventName].slice() : [];
         };
 
         /**
@@ -61,6 +60,8 @@
          * @returns {Boolean} Indication if we've emitted an event.
          */
         obj.emit = obj.dispatchEvent = function emit(eventName, data) {
+            this._listeners = this._listeners || {};
+
             //backwards compat with old method ".emit({ type: 'something' })"
             if(typeof eventName === 'object') {
                 data = eventName;
@@ -73,8 +74,8 @@
             }
 
             //iterate the listeners
-            if(_listeners && _listeners[eventName]) {
-                var listeners = _listeners[eventName],
+            if(this._listeners && this._listeners[eventName]) {
+                var listeners = this._listeners[eventName],
                     length = listeners.length,
                     fn = listeners[0],
                     i;
@@ -112,7 +113,9 @@
          * @param callback {Functon} fn Callback function.
          */
         obj.on = obj.addEventListener = function on(eventName, fn) {
-            (_listeners[eventName] = _listeners[eventName] || [])
+            this._listeners = this._listeners || {};
+
+            (this._listeners[eventName] = this._listeners[eventName] || [])
                 .push(fn);
 
             return this;
@@ -126,6 +129,8 @@
          * @param callback {Function} Callback function.
          */
         obj.once = function once(eventName, fn) {
+            this._listeners = this._listeners || {};
+
             var self = this;
             function onceHandlerWrapper() {
                 fn.apply(self.off(eventName, onceHandlerWrapper), arguments);
@@ -144,10 +149,12 @@
          * @param callback {Function} The listener that we need to find.
          */
         obj.off = obj.removeEventListener = function off(eventName, fn) {
-            if(!_listeners[eventName])
+            this._listeners = this._listeners || {};
+
+            if(!this._listeners[eventName])
                 return this;
 
-            var list = _listeners[eventName],
+            var list = this._listeners[eventName],
                 i = list.length = fn ? list.length : 0;
 
             while(i-- > 0) {
@@ -157,7 +164,7 @@
             }
 
             if(list.length === 0) {
-                delete _listeners[eventName];
+                delete this._listeners[eventName];
             }
 
             return this;
@@ -170,10 +177,12 @@
          * @param eventName {String} The event you want to remove all listeners for.
          */
         obj.removeAllListeners = function removeAllListeners(eventName) {
-            if(!_listeners[eventName])
+            this._listeners = this._listeners || {};
+
+            if(!this._listeners[eventName])
                 return this;
 
-            delete _listeners[eventName];
+            delete this._listeners[eventName];
 
             return this;
         };

diff --git a/src/pixi/utils/EventTarget.js b/src/pixi/utils/EventTarget.js
index bbc04b5..e59554f 100644
--- a/src/pixi/utils/EventTarget.js
+++ b/src/pixi/utils/EventTarget.js
@@ -38,9 +38,6 @@
      * @param object {Object} The obj to mix into
      */
     mixin: function mixin(obj) {
-        //local tracker for this object's listeners
-        var _listeners = {};
-
         /**
          * Return a list of assigned event listeners.
          *
@@ -49,7 +46,9 @@
          * @returns {Array} An array of listener functions
          */
         obj.listeners = function listeners(eventName) {
-            return _listeners[eventName] ? _listeners[eventName].slice() : [];
+            this._listeners = this._listeners || {};
+
+            return this._listeners[eventName] ? this._listeners[eventName].slice() : [];
         };
 
         /**
@@ -61,6 +60,8 @@
          * @returns {Boolean} Indication if we've emitted an event.
          */
         obj.emit = obj.dispatchEvent = function emit(eventName, data) {
+            this._listeners = this._listeners || {};
+
             //backwards compat with old method ".emit({ type: 'something' })"
             if(typeof eventName === 'object') {
                 data = eventName;
@@ -73,8 +74,8 @@
             }
 
             //iterate the listeners
-            if(_listeners && _listeners[eventName]) {
-                var listeners = _listeners[eventName],
+            if(this._listeners && this._listeners[eventName]) {
+                var listeners = this._listeners[eventName],
                     length = listeners.length,
                     fn = listeners[0],
                     i;
@@ -112,7 +113,9 @@
          * @param callback {Functon} fn Callback function.
          */
         obj.on = obj.addEventListener = function on(eventName, fn) {
-            (_listeners[eventName] = _listeners[eventName] || [])
+            this._listeners = this._listeners || {};
+
+            (this._listeners[eventName] = this._listeners[eventName] || [])
                 .push(fn);
 
             return this;
@@ -126,6 +129,8 @@
          * @param callback {Function} Callback function.
          */
         obj.once = function once(eventName, fn) {
+            this._listeners = this._listeners || {};
+
             var self = this;
             function onceHandlerWrapper() {
                 fn.apply(self.off(eventName, onceHandlerWrapper), arguments);
@@ -144,10 +149,12 @@
          * @param callback {Function} The listener that we need to find.
          */
         obj.off = obj.removeEventListener = function off(eventName, fn) {
-            if(!_listeners[eventName])
+            this._listeners = this._listeners || {};
+
+            if(!this._listeners[eventName])
                 return this;
 
-            var list = _listeners[eventName],
+            var list = this._listeners[eventName],
                 i = list.length = fn ? list.length : 0;
 
             while(i-- > 0) {
@@ -157,7 +164,7 @@
             }
 
             if(list.length === 0) {
-                delete _listeners[eventName];
+                delete this._listeners[eventName];
             }
 
             return this;
@@ -170,10 +177,12 @@
          * @param eventName {String} The event you want to remove all listeners for.
          */
         obj.removeAllListeners = function removeAllListeners(eventName) {
-            if(!_listeners[eventName])
+            this._listeners = this._listeners || {};
+
+            if(!this._listeners[eventName])
                 return this;
 
-            delete _listeners[eventName];
+            delete this._listeners[eventName];
 
             return this;
         };
diff --git a/test/unit/pixi/utils/EventTarget.js b/test/unit/pixi/utils/EventTarget.js
index d6e769b..eb0ea71 100644
--- a/test/unit/pixi/utils/EventTarget.js
+++ b/test/unit/pixi/utils/EventTarget.js
@@ -4,7 +4,7 @@
     var expect = chai.expect;
 
     var Clazz, PClazz, obj, pobj, obj2;
-    before(function () {
+    beforeEach(function () {
         Clazz = function () {};
         PClazz = function () {};
 
@@ -181,13 +181,15 @@
     it('handles multiple instances with the same prototype', function () {
         var called = 0;
 
-        function onMyEvent() {
+        function onMyEvent(e) {
+            console.log(e.type, this.istwo, this._listeners[e.type]);
             called++;
         }
 
         obj.on('myevent1', onMyEvent);
         obj.on('myevent2', onMyEvent);
 
+        obj2.istwo = true;
         obj2.on('myevent1', onMyEvent);
         obj2.on('myevent2', onMyEvent);