diff --git a/player/js/animation/AnimationItem.js b/player/js/animation/AnimationItem.js
index 60a978e..c94123c 100644
--- a/player/js/animation/AnimationItem.js
+++ b/player/js/animation/AnimationItem.js
@@ -493,6 +493,8 @@
     this._cbs = null;
     this.onEnterFrame = this.onLoopComplete = this.onComplete = this.onSegmentStart = this.onDestroy = null;
     this.renderer = null;
+    this.imagePreloader = null;
+    this.projectInterface = null;
 };
 
 AnimationItem.prototype.setCurrentRawFrameValue = function(value){