diff --git a/metznet/services/sssd.scm b/metznet/services/sssd.scm
index cf69730..596da1c 100644
--- a/metznet/services/sssd.scm
+++ b/metznet/services/sssd.scm
@@ -31,6 +31,7 @@
   (auth_provider maybe-string "auth provider")
   (cache_credentials maybe-boolean "cache credentials")
   (ldap_uri maybe-string "ldap server uri")
+  (ldap_schema maybe-string "ldap schema to use")
   (ldap_group_member maybe-string "group member attribute")
   (ldap_group_object_class maybe-string "group object class")
   (ldap_tls_reqcert maybe-string "tls_reqcert")
diff --git a/metznet/system/base-system.scm b/metznet/system/base-system.scm
index a8f9d07..bc2d388 100644
--- a/metznet/system/base-system.scm
+++ b/metznet/system/base-system.scm
@@ -239,6 +239,7 @@
                                                                        "ldap")
                                                                       (cache_credentials
                                                                        #t)
+                                                                      (ldap_schema "rfc2307bis")
                                                                       (ldap_group_member
                                                                         "member")
                                                                       (ldap_group_object_class