diff --git a/README.md b/README.md
index 1b0b85e..816fe2c 100644
--- a/README.md
+++ b/README.md
@@ -67,11 +67,13 @@ To use translations, follow the instructions [here](https://www.projectsend.org/
 
 More info at [ProjectSend](http://www.projectsend.org).
 
- 
 ## 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
@@ -115,7 +117,7 @@ Containers are configured using parameters passed at runtime (such as those abov
 
 | Parameter | Function |
 | :----: | --- |
-| `-p 80` | WebUI |
+| `-p 80:80` | 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). |