diff --git a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
index 11cbed77336..32189e52ed9 100644
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
@@ -748,7 +748,7 @@ public function getSingleIdReflectionProperty()
      *
      * @param object $entity
      *
-     * @return array<string|int, mixed>
+     * @return array<string, mixed>
      */
     public function getIdentifierValues($entity)
     {