diff --git a/packages/wyatt_ui_layout/example/lib/components/custom_app_bar.dart b/packages/wyatt_ui_layout/example/lib/components/custom_app_bar.dart
index d025a569..d31297fa 100644
--- a/packages/wyatt_ui_layout/example/lib/components/custom_app_bar.dart
+++ b/packages/wyatt_ui_layout/example/lib/components/custom_app_bar.dart
@@ -13,7 +13,7 @@ class CustomAppBar extends AppBarComponent {
       );
 
   @override
-  AppBarComponent configure({
+  AppBarComponent? configure({
     String? title,
     Widget? leading,
     List<Widget>? actions,
diff --git a/packages/wyatt_ui_layout/example/lib/components/custom_bottom_navigation_bar.dart b/packages/wyatt_ui_layout/example/lib/components/custom_bottom_navigation_bar.dart
index d3c13033..42eacfab 100644
--- a/packages/wyatt_ui_layout/example/lib/components/custom_bottom_navigation_bar.dart
+++ b/packages/wyatt_ui_layout/example/lib/components/custom_bottom_navigation_bar.dart
@@ -29,7 +29,7 @@ class CustomBottomNavigationBar extends BottomNavigationBarComponent {
       );
 
   @override
-  CustomBottomNavigationBar configure({
+  CustomBottomNavigationBar? configure({
     void Function(BuildContext, int)? onTap,
     int currentIndex = 0,
   }) =>