diff --git a/global/overlay/etc/puppet/modules/cdn/manifests/mqtt.pp b/global/overlay/etc/puppet/modules/cdn/manifests/mqtt.pp
index c34b323..1d59e13 100644
--- a/global/overlay/etc/puppet/modules/cdn/manifests/mqtt.pp
+++ b/global/overlay/etc/puppet/modules/cdn/manifests/mqtt.pp
@@ -50,7 +50,7 @@ class cdn::mqtt(
     content => file('cdn/mqtt/sunet-cdn-mqtt'),
   }
 
-  exec { "certbot certonly -n --email patlu@sunet.se --no-eff-email --agree-tos --standalone -d ${my_fqdn} --server ${acme_url[$environment]}":
+  exec { "certbot certonly -n --email patlu@sunet.se --no-eff-email --agree-tos --standalone -d ${my_fqdn} --server ${acme_url[$environment]} --http-01-address ${facts['networking']['ip']}":
     creates => "/etc/letsencrypt/live/${my_fqdn}/fullchain.pem"
   }
 }