diff --git a/packages/flutter/lib/src/material/banner.dart b/packages/flutter/lib/src/material/banner.dart
index f9ce75d91b..189bdbe180 100644
--- a/packages/flutter/lib/src/material/banner.dart
+++ b/packages/flutter/lib/src/material/banner.dart
@@ -24,7 +24,7 @@ import 'theme.dart';
 /// Widget build(BuildContext context) {
 ///   return MaterialBanner(
 ///     padding: const EdgeInsets.all(20),
-///     content: Text("Hey, I am an Material Banner"),
+///     content: Text("Hey, I am a Material Banner"),
 ///     leading: Icon(Icons.agriculture_outlined),
 ///     backgroundColor: Colors.grey[300],
 ///     actions: <Widget>[