diff --git a/src/Bundle/ChillMainBundle/Workflow/EventSubscriber/BlockSignatureOnRelatedEntityWithoutAnyStoredObjectGuard.php b/src/Bundle/ChillMainBundle/Workflow/EventSubscriber/BlockSignatureOnRelatedEntityWithoutAnyStoredObjectGuard.php
index c94046c0a..44f9b6173 100644
--- a/src/Bundle/ChillMainBundle/Workflow/EventSubscriber/BlockSignatureOnRelatedEntityWithoutAnyStoredObjectGuard.php
+++ b/src/Bundle/ChillMainBundle/Workflow/EventSubscriber/BlockSignatureOnRelatedEntityWithoutAnyStoredObjectGuard.php
@@ -17,7 +17,7 @@ use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Symfony\Component\Workflow\Event\GuardEvent;
 use Symfony\Component\Workflow\TransitionBlocker;
 
-class BlockSignatureOnRelatedEntityWithoutAnyStoredObjectGuard implements EventSubscriberInterface
+final readonly class BlockSignatureOnRelatedEntityWithoutAnyStoredObjectGuard implements EventSubscriberInterface
 {
     public function __construct(private EntityWorkflowManager $entityWorkflowManager) {}