diff --git a/lib/features/contributions/presentation/widgets/payment_dialog.dart b/lib/features/contributions/presentation/widgets/payment_dialog.dart
index b9c7a44..0767fca 100644
--- a/lib/features/contributions/presentation/widgets/payment_dialog.dart
+++ b/lib/features/contributions/presentation/widgets/payment_dialog.dart
@@ -16,7 +16,7 @@ import '../../bloc/contributions_bloc.dart';
 import '../../bloc/contributions_event.dart';
 import '../../data/models/contribution_model.dart';
 import '../../domain/repositories/contribution_repository.dart';
-import '../../data/repositories/contribution_repository.dart';
+import '../../data/repositories/contribution_repository.dart' show ContributionRepositoryImpl;
 
 /// Dialogue de paiement de contribution
 class PaymentDialog extends StatefulWidget {
@@ -460,7 +460,7 @@ class _PaymentDialogState extends State<PaymentDialog> {
           try {
             final repo = getIt<IContributionRepository>();
             // Appel direct via l'implémentation (confirmerMockPaiement n'est pas dans l'interface)
-            if (repo is ContributionRepository) {
+            if (repo is ContributionRepositoryImpl) {
               await repo.confirmerMockPaiement(ref);
             }
           } catch (_) {}