diff --git a/pottwal.yml b/pottwal.yml
index c180c5d..9108a29 100644
--- a/pottwal.yml
+++ b/pottwal.yml
@@ -35,6 +35,8 @@
           - name: sl.n39.eu
           - name: pad.n39.eu
           - name: "{{ prosody_domain_name }}"
+            alternate_names:
+              - conference.jabber.n39.eu
             deploy_cert_hook: "docker exec prosody prosodyctl --root cert import ${DOMAIN} /var/lib/dehydrated/certs"
     - role: penguineer.dehydrated_cron
     - role: dd24-dyndns-cron