diff --git a/data/templates/slapd/slapd.conf b/data/templates/slapd/slapd.conf
index 76f249060..0750b43aa 100644
--- a/data/templates/slapd/slapd.conf
+++ b/data/templates/slapd/slapd.conf
@@ -75,6 +75,7 @@ index  cn,mail                       eq
 index  gidNumber,uidNumber           eq
 index  member,memberUid,uniqueMember eq
 index  virtualdomain                 eq
+index  permission                    eq
 
 # Save the time that the entry gets modified, for database #1
 lastmod         on