diff --git a/data/templates/slapd/mailserver.schema b/data/templates/slapd/mailserver.schema
index 7b997be0d..b144477e6 100644
--- a/data/templates/slapd/mailserver.schema
+++ b/data/templates/slapd/mailserver.schema
@@ -80,17 +80,8 @@ objectclass ( 1.3.6.1.4.1.40328.1.1.2.2
             )
         )
 
-# Mail Group Objectclass
-objectclass ( 1.3.6.1.4.1.40328.1.1.2.3
-        NAME 'mailGroup'
-        SUP top
-        AUXILIARY
-        DESC 'Mail Group'
-        MUST ( mail )
-        )
-
 # Mail Alias Objectclass
-objectclass ( 1.3.6.1.4.1.40328.1.2.4.4
+objectclass ( 1.3.6.1.4.1.40328.1.2.4.3
         NAME 'mailAlias'
         DESC 'Mail Alias for a set of mail addresses'
         SUP top