diff --git a/docs/images/docker-rdesktop.md b/docs/images/docker-rdesktop.md
index df117e1696..a76d35b85f 100644
--- a/docs/images/docker-rdesktop.md
+++ b/docs/images/docker-rdesktop.md
@@ -170,6 +170,10 @@ services:
 
 To help you get started creating a container from this image you can either use docker-compose or the docker cli.
 
+!!! info
+
+    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
@@ -221,7 +225,7 @@ Containers are configured using parameters passed at runtime (such as those abov
 
 | Parameter | Function |
 | :----: | --- |
-| `3389` | RDP access port |
+| `3389:3389` | RDP access port |
 
 ### Environment Variables (`-e`)