diff --git a/src/Bundle/ChillEventBundle/Controller/EventController.php b/src/Bundle/ChillEventBundle/Controller/EventController.php
index 0dcaf176a..5d00387c8 100644
--- a/src/Bundle/ChillEventBundle/Controller/EventController.php
+++ b/src/Bundle/ChillEventBundle/Controller/EventController.php
@@ -273,7 +273,7 @@ class EventController extends AbstractController
         /**
          * @var Center $centers
          */
-        $centers = $this->authorizationHelper->getReachableCenters($this->getUser(), $role);
+        $centers = $this->authorizationHelper->getReachableCenters($this->getUser(), (string) $role);
 
         if (count($centers) === 1) {
             return $this->redirectToRoute('chill_event__event_new', [