diff --git a/web/install_website.yml b/web/install_website.yml
index d4b48638084e038b9ea66e0034ff076388fc7e4f..c21fed627f42888b347819d2269f16472f9d634e 100644
--- a/web/install_website.yml
+++ b/web/install_website.yml
@@ -3,8 +3,8 @@
 - name: "Setup api.freifunk.lu + freifunk.lu"
   hosts: website-web
   vars:
-    domain_name: 'freifunk.lu'
-    all_domain_names: "-d freifunk.lu -d www.freifunk.lu -d api.freifunk.lu"
+    domain_name: 'freifunk.lu' # domain_name is the directory name for the cert (in acme, /etc/ssl, etc.)
+    all_domain_names: '-d {{ vars["domain_name"] }} -d www.freifunk.lu -d api.freifunk.lu'
     reload_command: "systemctl reload nginx"
     web_conf_file: "freifunk.lu.conf"
   tasks: