diff --git a/samples/admob/mediation_example/lib/app_bar_item.dart b/samples/admob/mediation_example/lib/app_bar_item.dart
index 98615becf..b015104ab 100644
--- a/samples/admob/mediation_example/lib/app_bar_item.dart
+++ b/samples/admob/mediation_example/lib/app_bar_item.dart
@@ -1,4 +1,4 @@
-// Example app bar class.
+/// Example app bar class.
 class AppBarItem {
   static const adInpsectorText = 'Ad Inspector';