diff --git a/install/share/indices.ldif b/install/share/indices.ldif
index bc5f485db..65477e3c7 100644
--- a/install/share/indices.ldif
+++ b/install/share/indices.ldif
@@ -108,6 +108,7 @@ cn: fqdn
 nsSystemIndex: false
 nsIndexType: eq
 nsIndexType: pres
+nsIndexType: sub
 
 dn: cn=macAddress,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
 changetype: add
diff --git a/install/updates/20-indices.update b/install/updates/20-indices.update
index cb1fc6506..c155c741a 100644
--- a/install/updates/20-indices.update
+++ b/install/updates/20-indices.update
@@ -70,8 +70,9 @@ default:cn: fqdn
 default:ObjectClass: top
 default:ObjectClass: nsIndex
 default:nsSystemIndex: false
-default:nsIndexType: eq
-default:nsIndexType: pres
+only:nsIndexType: eq
+only:nsIndexType: pres
+only:nsIndexType: sub
 
 dn: cn=macAddress,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
 default:cn: macAddress