diff --git a/lib/components/util.dart b/lib/components/util.dart
index e281ed7..49ff66a 100644
--- a/lib/components/util.dart
+++ b/lib/components/util.dart
@@ -1,3 +1,7 @@
+// Copyright 2015 The Vanadium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 import 'package:sky/widgets.dart';
 
 List<Widget> flexChildren(List<Widget> children) {
@@ -5,4 +9,4 @@
   children.forEach(
       (child) => flexWidgets.add(new Flexible(child: child)));
   return flexWidgets;
-}
\ No newline at end of file
+}