diff --git a/example/lib/controller_menu.dart b/example/lib/controller_menu.dart
index e3edc883..eec8177b 100644
--- a/example/lib/controller_menu.dart
+++ b/example/lib/controller_menu.dart
@@ -51,7 +51,7 @@ class _ControllerMenuState extends State<ControllerMenu> {
   @override
   Widget build(BuildContext context) {
     var items = <Widget>[];
-    if (_filamentController?.hasViewer != true) {
+    if (_filamentController?.hasViewer.value != true) {
       items.addAll([
         MenuItemButton(
           child: const Text("create viewer"),