diff --git a/src/Bundle/ChillActivityBundle/Controller/ActivityController.php b/src/Bundle/ChillActivityBundle/Controller/ActivityController.php
index 798ae77b4..97678af50 100644
--- a/src/Bundle/ChillActivityBundle/Controller/ActivityController.php
+++ b/src/Bundle/ChillActivityBundle/Controller/ActivityController.php
@@ -41,7 +41,6 @@ use Symfony\Component\Form\Extension\Core\Type\SubmitType;
 use Symfony\Component\Form\FormInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\Security\Core\Role\Role;
 use Symfony\Component\Serializer\SerializerInterface;
 use Symfony\Contracts\Translation\TranslatorInterface;
 use function array_key_exists;
@@ -213,7 +212,7 @@ final class ActivityController extends AbstractController
 
         $form = $this->createForm(ActivityType::class, $entity, [
             'center' => $this->centerResolver->resolveCenters($entity)[0] ?? null,
-            'role' => new Role('CHILL_ACTIVITY_UPDATE'),
+            'role' => 'CHILL_ACTIVITY_UPDATE',
             'activityType' => $entity->getActivityType(),
             'accompanyingPeriod' => $accompanyingPeriod,
         ]);
@@ -442,7 +441,7 @@ final class ActivityController extends AbstractController
 
         $form = $this->createForm(ActivityType::class, $entity, [
             'center' => $this->centerResolver->resolveCenters($entity)[0] ?? null,
-            'role' => new Role('CHILL_ACTIVITY_CREATE'),
+            'role' => 'CHILL_ACTIVITY_CREATE',
             'activityType' => $entity->getActivityType(),
             'accompanyingPeriod' => $accompanyingPeriod,
         ]);