diff --git a/README.md b/README.md
index 9e1f2e7..912ba49 100644
--- a/README.md
+++ b/README.md
@@ -94,11 +94,13 @@ Access the webui at `http://<docker host ip>:80`. For connecting via OPDS on a m
 
 The linuxserver version gives you access to `config/local.php` in `/config` to customise your install to suit your needs, it also includes the dependencies required to directly view epub books in your browser.
 
- 
 ## Usage
 
 To help you get started creating a container from this image you can either use docker-compose or the docker cli.
 
+>[!NOTE]
+>Unless a parameter is flaged as 'optional', it is *mandatory* and a value must be provided.
+
 ### docker-compose (recommended, [click here for more info](https://docs.linuxserver.io/general/docker-compose))
 
 ```yaml
@@ -142,8 +144,8 @@ Containers are configured using parameters passed at runtime (such as those abov
 
 | Parameter | Function |
 | :----: | --- |
-| `-p 80` | HTTP WebUI |
-| `-p 443` | HTTPS WebUI |
+| `-p 80:80` | HTTP WebUI |
+| `-p 443:443` | HTTPS WebUI |
 | `-e PUID=1000` | for UserID - see below for explanation |
 | `-e PGID=1000` | for GroupID - see below for explanation |
 | `-e TZ=Etc/UTC` | specify a timezone to use, see this [list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List). |