diff --git a/tool/lib/commands/update_flutter_sdk.dart b/tool/lib/commands/update_flutter_sdk.dart
index 28ed8439341..9dd467ae097 100644
--- a/tool/lib/commands/update_flutter_sdk.dart
+++ b/tool/lib/commands/update_flutter_sdk.dart
@@ -54,8 +54,9 @@ class UpdateFlutterSdkCommand extends Command {
 
   @override
   String get description =>
-      'Updates the "devtools_rev" hash in the Dart SDK DEPS file with the '
-      'provided commit hash, and creates a Gerrit CL for review';
+      'Updates the the Flutter SDK contained in the \'tool/\' directory to the '
+      'latest Flutter candidate branch. Optionally updates your local checkout '
+      'of the Flutter SDK as well.';
 
   @override
   Future run() async {