diff --git a/examples/api/lib/material/navigation_bar/navigation_bar.1.dart b/examples/api/lib/material/navigation_bar/navigation_bar.1.dart
index edd5e2d094..ec823c4aae 100644
--- a/examples/api/lib/material/navigation_bar/navigation_bar.1.dart
+++ b/examples/api/lib/material/navigation_bar/navigation_bar.1.dart
@@ -63,6 +63,8 @@ class _NavigationExampleState extends State<NavigationExample> {
             const SizedBox(height: 10),
             OverflowBar(
               spacing: 10.0,
+              overflowAlignment: OverflowBarAlignment.center,
+              overflowSpacing: 10.0,
               children: <Widget>[
                 ElevatedButton(
                   onPressed: () {
diff --git a/examples/api/test/material/navigation_bar/navigation_bar.1_test.dart b/examples/api/test/material/navigation_bar/navigation_bar.1_test.dart
index 13005652c0..89d11c8efc 100644
--- a/examples/api/test/material/navigation_bar/navigation_bar.1_test.dart
+++ b/examples/api/test/material/navigation_bar/navigation_bar.1_test.dart
@@ -38,6 +38,17 @@ void main() {
 
     expect(find.text('Label behavior: alwaysHide'), findsOneWidget);
     navigationBarWidget = tester.firstWidget(find.byType(NavigationBar));
-    expect(navigationBarWidget.labelBehavior, NavigationDestinationLabelBehavior.alwaysHide);
+    expect(
+      navigationBarWidget.labelBehavior,
+      NavigationDestinationLabelBehavior.alwaysHide,
+    );
+  });
+
+  testWidgets('Overflow buttons are aligned in the center', (WidgetTester tester) async {
+    await tester.pumpWidget(const example.NavigationBarApp());
+
+    final OverflowBar overflowBar = tester.widget<OverflowBar>(find.byType(OverflowBar));
+    expect(overflowBar.overflowAlignment, OverflowBarAlignment.center);
+    expect(overflowBar.overflowSpacing, 10.0);
   });
 }