diff --git a/src/Security/Authorization/Voter/UserAclVoter.php b/src/Security/Authorization/Voter/UserAclVoter.php
index 0cda8cdb8..7a4c7a0d4 100644
--- a/src/Security/Authorization/Voter/UserAclVoter.php
+++ b/src/Security/Authorization/Voter/UserAclVoter.php
@@ -36,6 +36,8 @@ public function supportsAttribute($attribute): bool
     /**
      * @param mixed   $subject
      * @param mixed[] $attributes
+     *
+     * @return self::ACCESS_ABSTAIN|self::ACCESD_DENIED
      */
     public function vote(TokenInterface $token, $subject, array $attributes): int
     {