diff --git a/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php b/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
index a742a4e98..bffe42a2f 100644
--- a/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
+++ b/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
@@ -168,6 +168,7 @@ class CalendarController extends AbstractController
         [$person, $accompanyingPeriod] = [$calendar->getPerson(), $calendar->getAccompanyingPeriod()];
 
         $form = $this->createForm(CancelType::class, $calendar);
+        $form->add('submit', SubmitType::class);
 
         if ($accompanyingPeriod instanceof AccompanyingPeriod) {
             $view = '@ChillCalendar/Calendar/cancelCalendarByAccompanyingCourse.html.twig';