diff --git a/initial ubuntu setup/README.md b/initial ubuntu setup/README.md
index 5b65021..975c25e 100644
--- a/initial ubuntu setup/README.md	
+++ b/initial ubuntu setup/README.md	
@@ -146,7 +146,7 @@ So now you're inside the caddy folder.
 At minimum you will need a **.env**, **Caddyfile** and **docker-compose.yml**. the config/ and data/ folders are automatically generated by docker-compose later.
 
 #### Creating .env 
-Do this with `nano .env` and add the following lines in the .env file
+Do this with `nano .env` and add the following lines in the .env file. Do not use subdomain. Just use yourrootdomain.com, in this example I'm using example.com
 **.env**
 ```
 MY_DOMAIN=example.com