diff --git a/conf/config.json b/conf/config.json
index 7d24587..8c30f91 100644
--- a/conf/config.json
+++ b/conf/config.json
@@ -27,6 +27,7 @@
       "ldap_group_filter": "objectClass=posixGroup",
       "ldap_group_filter_mode": "0",
       "ldap_groupfilter_objectclass": "posixGroup",
+      "ldap_group_member_assoc_attribute": "memberUid",
       "ldap_host": "localhost",
       "ldap_login_filter": "(&(|(objectclass=posixAccount))(uid=%uid))",
       "ldap_login_filter_mode": "0",