diff --git a/Source/DynamicScene/CompositeDynamicObjectCollection.js b/Source/DynamicScene/CompositeDynamicObjectCollection.js
index 2c53af5ce726..fcdd33f8bfef 100644
--- a/Source/DynamicScene/CompositeDynamicObjectCollection.js
+++ b/Source/DynamicScene/CompositeDynamicObjectCollection.js
@@ -33,7 +33,7 @@ define(['../Core/createGuid',
             var composite = that._composite;
             var compositeObject = composite.getById(id);
             var compositeProperty = compositeObject[propertyName];
-            var collections = that._collectionsCopy;
+            var collections = that._collections;
             var collectionsLength = collections.length;
             for (var q = collectionsLength - 1; q >= 0; q--) {
                 var object = collections[q].getById(dynamicObject.id);
@@ -63,7 +63,7 @@ define(['../Core/createGuid',
             unsubscribeFromProperty(eventHash, collectionId, dynamicObject, propertyName);
             subscribeToProperty(that, eventHash, collectionId, dynamicObject, propertyName, dynamicObject[propertyName]);
 
-            var collections = that._collectionsCopy;
+            var collections = that._collections;
             var collectionsLength = collections.length;
             var firstTime = true;
             for (var q = collectionsLength - 1; q >= 0; q--) {