diff --git a/examples/stocks2/lib/stock_app.dart b/examples/stocks2/lib/stock_app.dart
index c5485b14abb..a5467c392be 100644
--- a/examples/stocks2/lib/stock_app.dart
+++ b/examples/stocks2/lib/stock_app.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:sky/rendering/box.dart';
 import 'package:sky/widgets/basic.dart';
 import 'package:sky/widgets/navigator.dart';
 import 'package:sky/widgets/widget.dart';
diff --git a/examples/stocks2/lib/stock_home.dart b/examples/stocks2/lib/stock_home.dart
index 7b322505cc9..e7b58d979a9 100644
--- a/examples/stocks2/lib/stock_home.dart
+++ b/examples/stocks2/lib/stock_home.dart
@@ -3,8 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:sky/editing2/input.dart';
-import 'package:sky/rendering/box.dart';
-import 'package:sky/rendering/paragraph.dart';
 import 'package:sky/theme2/colors.dart' as colors;
 import 'package:sky/theme2/typography.dart' as typography;
 import 'package:sky/widgets/basic.dart';
diff --git a/examples/stocks2/lib/stock_settings.dart b/examples/stocks2/lib/stock_settings.dart
index 11b1c1012a0..1fdfdf8d246 100644
--- a/examples/stocks2/lib/stock_settings.dart
+++ b/examples/stocks2/lib/stock_settings.dart
@@ -2,17 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:sky' as sky;
-
 import 'package:sky/theme2/colors.dart' as colors;
 import 'package:sky/theme2/typography.dart' as typography;
 import 'package:sky/widgets/basic.dart';
 import 'package:sky/widgets/checkbox.dart';
 import 'package:sky/widgets/icon_button.dart';
-import 'package:sky/widgets/menu_divider.dart';
 import 'package:sky/widgets/menu_item.dart';
 import 'package:sky/widgets/navigator.dart';
-import 'package:sky/widgets/raised_button.dart';
 import 'package:sky/widgets/scaffold.dart';
 import 'package:sky/widgets/tool_bar.dart';
 
diff --git a/sdk/lib/app/view.dart b/sdk/lib/app/view.dart
index e4fe302afc9..d1316c043df 100644
--- a/sdk/lib/app/view.dart
+++ b/sdk/lib/app/view.dart
@@ -55,7 +55,7 @@ class AppView {
 
   final List<EventListener> _eventListeners = new List<EventListener>();
   void addEventListener(EventListener e) => _eventListeners.add(e);
-  void removeEventListener(EventListener e) => _eventListeners.remove(e);
+  bool removeEventListener(EventListener e) => _eventListeners.remove(e);
 
   RenderBox get root => _renderView.child;
   void set root(RenderBox value) {