diff --git a/helperbot b/helperbot
index 125bfbc..31ab3d6 100755
--- a/helperbot
+++ b/helperbot
@@ -617,7 +617,6 @@ function docker_cleanup {
 function update_certificates {
     # internal values - caddy's home may change at random
     local caddy_home_directory=/srv/docker/caddy/caddy_data/caddy/certificates/acme-v02.api.letsencrypt.org-directory
-    #local known_domains=("synth.download" "mx1.synth.download" "xmpp.synth.download" "muc.xmpp.synth.download" "upload.xmpp.synth.download" "proxy.xmpp.synth.download" "pubsub.xmpp.synth.download")
     local known_domains=("synth.download" "wildcard_.synth.download" "muc.xmpp.synth.download" "upload.xmpp.synth.download" "proxy.xmpp.synth.download" "pubsub.xmpp.synth.download")
     local certs_location=/etc/certs