diff --git a/test/game/components/backbox/backbox_test.dart b/test/game/components/backbox/backbox_test.dart
index 4b257345..1416f84e 100644
--- a/test/game/components/backbox/backbox_test.dart
+++ b/test/game/components/backbox/backbox_test.dart
@@ -106,6 +106,7 @@ class _MockAppLocalizations extends Mock implements AppLocalizations {
   @override
   String get initialsErrorMessage => '';
 
+  @override
   String get leaderboardErrorMessage => '';
 }