diff --git a/pottwal.yml b/pottwal.yml
index f12f09e..f78ef9f 100644
--- a/pottwal.yml
+++ b/pottwal.yml
@@ -13,6 +13,7 @@
     shlink_domain_name: sl.n39.eu
 
     prosody_data: "{{ data_dir }}/prosody"
+    prosody_domain_name: jabber.n39.eu
     jabber_host_port: 8086
 
     hedgedoc_host_port: 8084
@@ -33,7 +34,7 @@
         - name: uritools-api.n39.eu
         - name: sl.n39.eu
         - name: pad.n39.eu
-        - name: jabber.n39.eu
+        - name: "{{ prosody_domain_name }}"
           deploy_cert_hook: "docker exec prosody prosodyctl --root cert import ${DOMAIN} /var/lib/dehydrated/certs"
     - role: penguineer.dehydrated_cron
     - role: dd24-dyndns-cron
@@ -140,7 +141,7 @@
           - "{{ prosody_data }}/etc/prosody:/etc/prosody:rw"
           - "{{ prosody_data }}/var/lib/prosody:/var/lib/prosody:rw"
           - "{{ prosody_data }}/var/log/prosody:/var/log/prosody:rw"
-          - "{{ dehydrated_certs_dir }}/jabber.n39.eu:/var/lib/dehydrated/certs/jabber.n39.eu:ro"
+          - "{{ dehydrated_certs_dir }}/{{ prosody_domain_name }}:/var/lib/dehydrated/certs/{{ prosody_domain_name }}:ro"
 
     - name: Ensure container for static XMPP website is running
       docker_container:
@@ -159,12 +160,12 @@
         volumes:
           - "{{ prosody_data }}/var/www:/public:ro"
 
-    - name: Setup proxy site jabber.n39.eu
+    - name: Setup proxy site {{ prosody_domain_name }}
       # point to static website for now
       include_role:
         name: setup-http-site-proxy
       vars:
-        site_name: "jabber.n39.eu"
+        site_name: "{{ prosody_domain_name }}"
         proxy_port: "{{ jabber_host_port }}"
 
     - name: Check if hedgedoc data dir exists