diff --git a/ui/core/bindable.ts b/ui/core/bindable.ts
index da860ac59..13fdc8de8 100644
--- a/ui/core/bindable.ts
+++ b/ui/core/bindable.ts
@@ -124,7 +124,6 @@ export class Binding {
     updating = false;
     source: WeakRef<Object>;
     target: WeakRef<Bindable>;
-    weakEventId: number;
 
     private sourceOptions: { instance: WeakRef<any>; property: any };
     private targetOptions: { instance: WeakRef<any>; property: any };
diff --git a/ui/core/weak-event-listener.d.ts b/ui/core/weak-event-listener.d.ts
index 450f04981..e1b843081 100644
--- a/ui/core/weak-event-listener.d.ts
+++ b/ui/core/weak-event-listener.d.ts
@@ -2,7 +2,7 @@ declare module "ui/core/weak-event-listener" {
     import observable = require("data/observable");
 
     /**
-     * Creates and initialize WeakEventListener.
+     * Attaches a WeakEventListener.
      * @param source Observable class which emits the event.
      * @param eventName The event name.
      * @param handler The function which should be called when event occurs.
@@ -11,7 +11,7 @@ declare module "ui/core/weak-event-listener" {
     export function addWeakEventListener(source: observable.Observable, eventName: string, handler: (eventData: observable.EventData) => void, target: any) : void;
 
     /**
-     * Removes and clears all resources from WeakEventListener.
+     * Removes a WeakEventListener.
      * @param source Observable class which emits the event.
      * @param eventName The event name.
      * @param handler The function which should be called when event occurs.
diff --git a/ui/list-view/list-view-common.ts b/ui/list-view/list-view-common.ts
index f8cdc734f..dad3b652f 100644
--- a/ui/list-view/list-view-common.ts
+++ b/ui/list-view/list-view-common.ts
@@ -69,8 +69,6 @@ export class ListView extends view.View implements definition.ListView {
             )
         );
 
-    private _itemsChangedWeakListenerId: number;
-
     get items(): any {
         return this._getValue(ListView.itemsProperty);
     }
@@ -131,9 +129,8 @@ export class ListView extends view.View implements definition.ListView {
     }
 
     public _onItemsPropertyChanged(data: dependencyObservable.PropertyChangeData) {
-        if (data.oldValue instanceof observable.Observable && types.isDefined(this._itemsChangedWeakListenerId)) {
+        if (data.oldValue instanceof observable.Observable)) {
             weakEvents.removeWeakEventListener(data.oldValue, observableArray.ObservableArray.changeEvent, this._onItemsChanged, this);
-            delete this._itemsChangedWeakListenerId;
         }
 
         if (data.newValue instanceof observable.Observable) {