diff --git a/example/lib/main.dart b/example/lib/main.dart
index 18c6f9f..7fae307 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -67,6 +67,7 @@ class _MyAppState extends State<MyApp> {
         ChangeNotifierProvider.value(value: UserInfoNotifier()),
       ],
       child: MaterialApp(
+        navigatorKey: navigatorKey,
         localizationsDelegates: [
           RefreshLocalizations.delegate,
           GlobalMaterialLocalizations.delegate,