diff --git a/docker-compose.yml b/docker-compose.yml
index 01585f0e..9b919128 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -227,6 +227,7 @@ services:
       - MAIN_VHOST_STATUS_ALIAS=/devilbox-httpd-status
       - MAIN_VHOST_SSL_TYPE=both
       - MAIN_VHOST_SSL_GEN=1
+      - MAIN_VHOST_SSL_CN=${DEVILBOX_UI_SSL_CN:-localhost}
 
       ##
       ## Enable Mass Vhosts
diff --git a/env-example b/env-example
index 86c7c858..5e0f1128 100644
--- a/env-example
+++ b/env-example
@@ -149,6 +149,22 @@ TIMEZONE=Europe/Berlin
 DNS_CHECK_TIMEOUT=1
 
 
+
+###
+### Devilbox UI SSL Certificate generation
+###
+### When using SSL each certificate requires names for which it is responsible:
+### Common Name as well as alternative names.
+###
+### Specify comma separated hostnames below by which you want to access the Devilbox.
+### Those hostnames will be included in the SSL certificate for the Devilbox intranet.
+### This has nothing to do for SSL certificates for projects, it is just for the intranet
+### itself.
+###
+DEVILBOX_UI_SSL_CN=localhost,*.localhost,devilbox,*.devilbox
+
+
+
 ###
 ### Devilbox UI Password protection enable/disable (1/0)
 ###