diff --git a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
index 4b421912469..955c3993f0a 100644
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
@@ -82,7 +82,7 @@
  *      nullable?: bool,
  *      notInsertable?: bool,
  *      notUpdatable?: bool,
- *      generated?: string,
+ *      generated?: int,
  *      enumType?: class-string<BackedEnum>,
  *      columnDefinition?: string,
  *      precision?: int,