diff --git a/openvidu-server/docker/openvidu-docker-compose/.env b/openvidu-server/docker/openvidu-docker-compose/.env
index 81adbf00..acf96a70 100644
--- a/openvidu-server/docker/openvidu-docker-compose/.env
+++ b/openvidu-server/docker/openvidu-docker-compose/.env
@@ -29,10 +29,14 @@ LETSENCRYPT_EMAIL=user@example.com
 # Proxy configuration
 # If you want to change the ports on which openvidu listens, uncomment the following lines
 
-# Used for http connections and necessary to obtain letsencrypt certificated
+# Allows any request to http://IP:OPENVIDU_HTTP_PORT/ to be automatically 
+# redirected to https://IP:OPENVIDU_HTTPS_PORT/ . 
+# WARNING: the default port 80 cannot be changed during the first boot 
+# if you have chosen to deploy with the option CERTIFICATE_TYPE=letsencrypt
 # OPENVIDU_HTTP_PORT=80
 
-# Used for Openvidu API and the application deployed using docker
+# Changes the port of all services exposed by OpenVidu. 
+# SDKs, REST clients and browsers will have to connect to this port
 # OPENVIDU_HTTPS_PORT=443
 
 # Whether to enable recording module or not