diff --git a/README.md b/README.md
index 90a9a89..3a7bcbc 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ Container images are configured using parameters passed at runtime (such as thos
 Parameter / Env var | Optional | Default value | Description | 
 ------------ | ------------- | ------------- | -------------
 `network_mode: host` | no | / | The container’s network stack is not isolated from the Docker host. This is necessary to send WOL packages from a container. The port of the webserver is configures via `APACHE2_PORT`.
-`APACHE2_PORT` | no | 8080 | Port of the webinterface.
+`APACHE2_PORT` | yes | 8080 | Port of the webinterface.
 `PASSPHRASE` | yes | admin | Password of the webinterface.
 `RWSOLS_COMPUTER_NAME` | no | / | Displaynames for the computers (**array**)
 `RWSOLS_COMPUTER_MAC` | no | / | MAC addresses for the computers (**array**)