diff --git a/data/powerdns/files/bind-zones/kunbox.net b/data/powerdns/files/bind-zones/kunbox.net
index d1280bb..4eec895 100644
--- a/data/powerdns/files/bind-zones/kunbox.net
+++ b/data/powerdns/files/bind-zones/kunbox.net
@@ -11,8 +11,8 @@ $ORIGIN kunbox.net.
                     IN  TXT     "v=spf1 mx ~all"
 
 ; delegate acme stuff to psql-managed zone
-_acme-challenge     IN  CNAME   kunbox.net.le.kunbox.net.
-_acme-challenge.home IN CNAME   home.kunbox.net.le.kunbox.net.
+_acme-challenge     IN  CNAME   _acme-challenge.kunbox.net.le.kunbox.net.
+_acme-challenge.home IN CNAME   _acme-challenge.home.kunbox.net.le.kunbox.net.
 
 ; Mail servers
 mta-sts             IN  CNAME   rx300