diff --git a/mnemo_cards_web_v2/lib/domain/state/tests_state_manager.dart b/mnemo_cards_web_v2/lib/domain/state/tests_state_manager.dart
index 03a1c37..5bf68ab 100644
--- a/mnemo_cards_web_v2/lib/domain/state/tests_state_manager.dart
+++ b/mnemo_cards_web_v2/lib/domain/state/tests_state_manager.dart
@@ -17,7 +17,7 @@ part 'tests_state_manager.freezed.dart';
 
 /// State for tests
 @freezed
-class TestsState with _$TestsState {
+abstract class TestsState with _$TestsState {
   const factory TestsState.loading() = _Loading;
   const factory TestsState.loaded({
     required List<TestDto> tests,