diff --git a/docs/MODULES.md b/docs/MODULES.md
index 821a202e9..1f2fae94f 100644
--- a/docs/MODULES.md
+++ b/docs/MODULES.md
@@ -56,6 +56,8 @@ However, the Pi does have a firewall, so various commands need be run to allow a
 
 This module will allow you to tunnel internet from an EXIT node (server) that has Internet to another node that does not. To do this you must exchange public keys.  The public key can be found in /etc/yggdrasil.conf
 
+Yo use this module you must have it installed. You can check to see if the file `/usr/local/sbin/yggdrasil-setup` exists. If it does then you have it installed. If it does not then you need to have the module installed first.
+
 ### Additional configuration
 Additional configurations can be made in the file `/etc/yggdrasil.iptunnel.conf`