diff --git a/myapp/lib/main.dart b/myapp/lib/main.dart
index 1c230471..852479d4 100644
--- a/myapp/lib/main.dart
+++ b/myapp/lib/main.dart
@@ -10,6 +10,7 @@ void main() => runApp(MaterialApp(
       child: Text('hello, ninjas!'),
     ),
     floatingActionButton: FloatingActionButton(
+      onPressed: () {},
       child: Text('click'),
     ),
   ),