diff --git a/roles/nsd/templates/zones/mateu.be.zone.j2 b/roles/nsd/templates/zones/mateu.be.zone.j2
index c64ecc4..7e083a4 100644
--- a/roles/nsd/templates/zones/mateu.be.zone.j2
+++ b/roles/nsd/templates/zones/mateu.be.zone.j2
@@ -1,6 +1,7 @@
 $TTL 86400
 {% set firstserver = groups['master_nsdservers'] | first %}
-@		IN SOA {{ hostvars[firstserver].nsd_ansible_host | default(hostvars[firstserver].ansible_host) }}. tech.ovh.net. (
+{% set current_firstserver = hostvars[firstserver].nsd_ansible_host | default(hostvars[firstserver].ansible_host) %}
+@		IN SOA {{ current_firstserver | regex_replace('^([a-z0-9-]+)\\.', '\\1-v4.') if current_firstserver.endswith('mateu.be') else current_firstserver }}. tech.ovh.net. (
 				{{ dns_serial }}; timestamp serial number
 				28800; Refresh
 				7200; Retry