diff --git a/src/Bundle/ChillTicketBundle/src/Security/Voter/TicketVoter.php b/src/Bundle/ChillTicketBundle/src/Security/Voter/TicketVoter.php
index bf1444385..fa3a7b4d2 100644
--- a/src/Bundle/ChillTicketBundle/src/Security/Voter/TicketVoter.php
+++ b/src/Bundle/ChillTicketBundle/src/Security/Voter/TicketVoter.php
@@ -50,7 +50,7 @@ final class TicketVoter extends Voter implements ProvideRoleHierarchyInterface
 
     protected function voteOnAttribute(string $attribute, $subject, TokenInterface $token): bool
     {
-        assert($subject instanceof Ticket || null === $subject);
+        assert($subject instanceof Ticket || $subject instanceof Person || null === $subject);
 
         $user = $token->getUser();