diff --git a/docs/extensions/idm/setup.md b/docs/extensions/idm/setup.md
index 3a5f728dc..6d434dd60 100644
--- a/docs/extensions/idm/setup.md
+++ b/docs/extensions/idm/setup.md
@@ -29,7 +29,8 @@ export LDAP_USER_OBJECTCLASS="inetOrgPerson"
 export LDAP_GROUP_BASE_DN="ou=groups,o=libregraph-idm"
 export LDAP_GROUP_SCHEMA_ID="ownclouduuid"
 export LDAP_GROUP_SCHEMA_MAIL="mail"
-export LDAP_GROUP_SCHEMA_GROUPNAME="member"
+export LDAP_GROUP_SCHEMA_GROUPNAME="cn"
+export LDAP_GROUP_SCHEMA_MEMBER="member"
 export LDAP_GROUP_OBJECTCLASS="groupOfNames"
 export GRAPH_LDAP_BIND_DN="uid=libregraph,ou=sysusers,o=libregraph-idm"
 export GRAPH_LDAP_BIND_PASSWORD=idm