diff --git a/roles/nsd/templates/zones/mateu.be.zone.j2 b/roles/nsd/templates/zones/mateu.be.zone.j2
index c399dde..0428ed1 100644
--- a/roles/nsd/templates/zones/mateu.be.zone.j2
+++ b/roles/nsd/templates/zones/mateu.be.zone.j2
@@ -8,9 +8,7 @@ $TTL 86400
 			)
 
 {% for server in groups['nsdservers'] %}
-{% for ip_family in ['v4', 'v6'] %}
-@		IN NS {{ server | regex_replace('^([a-z0-9-]+)\\.', '\\1-' ~ ip_family ~ '.') }}.
-{% endfor %}
+@		IN NS {{ server | regex_replace('^([a-z0-9-]+)\\.', '\\1-v4.') }}.
 {% endfor %}
 
 $ORIGIN {{ item.name }}.