diff --git a/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2 b/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2
index c4fe18a..49ccdf2 100644
--- a/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2
+++ b/roles/dns_intern/templates/bind/23.172.in-addr.arpa.zone.j2
@@ -82,7 +82,7 @@ $GENERATE 2-254 $.10		IN	PTR	vpn-${0,3,d}-10.binary.kitchen.
 ; Management Auweg
 61.12				IN	PTR	weizen.binary.kitchen.
 ; Services Auweg
-3.12				IN	PTR	aeron.binary.kitchen.
+3.13				IN	PTR	aeron.binary.kitchen.
 ; Clients Auweg
 $GENERATE 10-230 $.14		IN	PTR	dhcp-${0,3,d}-14.binary.kitchen.
 ; MQTT