diff --git a/cdist/conf/type/__user/man.rst b/cdist/conf/type/__user/man.rst
index ef6b77af..0c8107c7 100644
--- a/cdist/conf/type/__user/man.rst
+++ b/cdist/conf/type/__user/man.rst
@@ -30,6 +30,9 @@ home
 gid
     see above
 
+groups
+    see above
+
 password
     see above
 
diff --git a/cdist/conf/type/__user/parameter/optional b/cdist/conf/type/__user/parameter/optional
index de6c3838..ca41fe0a 100644
--- a/cdist/conf/type/__user/parameter/optional
+++ b/cdist/conf/type/__user/parameter/optional
@@ -2,6 +2,7 @@ state
 comment
 home
 gid
+groups
 password
 shell
 uid