diff --git a/example/lib/src/ui/device_detail/characteristic_interaction_dialog.dart b/example/lib/src/ui/device_detail/characteristic_interaction_dialog.dart
index 17f09231..98fd0301 100644
--- a/example/lib/src/ui/device_detail/characteristic_interaction_dialog.dart
+++ b/example/lib/src/ui/device_detail/characteristic_interaction_dialog.dart
@@ -35,7 +35,7 @@ class _CharacteristicInteractionDialogState extends State<_CharacteristicInterac
   late String writeOutput;
   late String subscribeOutput;
   late TextEditingController textEditingController;
-  late StreamSubscription<List<int>>? subscribeStream;
+  StreamSubscription<List<int>>? subscribeStream;
 
   @override
   void initState() {