diff --git a/resources/chaosknoten/auth-dns/zones/ccchh.net.zone b/resources/chaosknoten/auth-dns/zones/ccchh.net.zone
index 813743b..2ba5135 100644
--- a/resources/chaosknoten/auth-dns/zones/ccchh.net.zone
+++ b/resources/chaosknoten/auth-dns/zones/ccchh.net.zone
@@ -53,7 +53,7 @@ hmdooris-ccu   A    172.31.200.17
 
 club-assistant                  AAAA  2a07:c481:1:d0::a
                                 A     10.31.208.10
-_acme-challenge.club-assistant  CNAME d50ad73a-f82d-4244-87f0-6f5195b37d21.auth.acmedns.hamburg.ccc.de
+_acme-challenge.club-assistant  CNAME d50ad73a-f82d-4244-87f0-6f5195b37d21.auth.acmedns.hamburg.ccc.de.
 ;esphome                        AAAA  2a07:c481:1:d0::66
 ;zigbee2mqtt                    A     185.161.129.132
 ;light                          AAAA  2a07:c481:1:d0::16