diff --git a/example/lib/main.dart b/example/lib/main.dart
index 4ba80ab..39d5966 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -13,7 +13,7 @@ class MyApp extends StatefulWidget {
 class _MyAppState extends State<MyApp> {
   String _fileName = '...';
   String _path = '...';
-  FileType _pickingType;
+  FileType _pickingType = FileType.ANY;
 
   void _openFileExplorer() async {
     try {