diff --git a/Dockerfile b/Dockerfile
index 5428655..1f0b520 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,7 @@ ENV EASYRSA_VARS_FILE $OPENVPN/vars
 
 VOLUME ["/etc/openvpn"]
 
-# Internally uses port 1194, remap using docker
+# Internally uses port 1194/udp, remap using `docker run -p 443:1194/tcp`
 EXPOSE 1194/udp
 
 WORKDIR /etc/openvpn