diff --git a/vars/default_vars.yml b/vars/default_vars.yml
index 6b91d4c29..15dab75fb 100644
--- a/vars/default_vars.yml
+++ b/vars/default_vars.yml
@@ -296,15 +296,11 @@ nodered_port: 1880
 nextcloud_install: False
 nextcloud_enabled: False
 
-# A full featured PBX based on Asterisk and FreePBX
-#
-# Caution!
-# This is a LARGE install that will compile from source and take lots of time. Handle with care!
-# So far, supported on Ubuntu 18.x ONLY.
+# A full-featured PBX (for rural telephony, etc) based on Asterisk and FreePBX.
+# So far, supported on Ubuntu 18.x and Debian 9 ONLY.  Uses Node.js 10.x
 pbx_install: False
 pbx_enabled: False
 asterisk_chan_dongle: False
-#nodejs_version: 10.x
 
 # If using WordPress intensively, set apache_high_php_limits in 3-BASE-SERVER
 wordpress_install: False