diff --git a/README.md b/README.md
index e9c960a..54443b0 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ A modification of [lilproxy][lilproxy_url] that forwards only Q3 rcon/query pack
 
 Unfortunately the Q3Rcon engine ties the rcon port to the game servers public port used for client connections. This proxy will allow you to run rcon through a separate whitelisted port.
 
+---
+
 ### Use
 
 #### Flags
@@ -16,7 +18,7 @@ Unfortunately the Q3Rcon engine ties the rcon port to the game servers public po
 /usr/local/bin/q3rcon-proxy \
     --proxy-host=0.0.0.0 \
     --target-host=localhost \
-    --ports-mapping=28961:28960 \
+    --port-map=20000:28960 --port-map=20001:28961 --port-map=20002:28962 \
     --session-timeout=20 \
     --loglevel=debug
 ```
@@ -27,18 +29,25 @@ Each of the flags has a corresponding environment variable:
 
 -   `Q3RCON_PROXY_HOST`: The host the proxy server sits on.
 -   `Q3RCON_TARGET_HOST`: The host the game servers sit on.
--   `Q3RCON_PORTS_MAPPING`: A mapping as a string with `source:target` pairs delimited by `;`.
+-   `Q3RCON_PORT_MAP`: A mapping as a string with `source:target` pairs delimited by `,`.
 -   `Q3RCON_SESSION_TIMEOUT`: Timeout in seconds for each udp session.
 -   `Q3RCON_LOGLEVEL`: The application's logging level (see [Logging][logging]).
 
-Multiple rcon proxies may be configured by setting *--ports-mapping/Q3RCON_PORTS_MAPPING* like so:
+example .envrc:
 
-```console
-export Q3RCON_PORTS_MAPPING="20000:28960;20001:28961;20002:28962"
+```bash
+#!/usr/bin/env bash
+
+export Q3RCON_PROXY_HOST="0.0.0.0"
+export Q3RCON_TARGET_HOST="localhost"
+export Q3RCON_PORT_MAP="20000:28960,20001:28961,20002:28962"
+export Q3RCON_SESSION_TIMEOUT=20
 ```
 
 This would configure q3rcon-proxy to run 3 proxy servers listening on ports 20000, 20001 and 20002 that redirect rcon requests to game servers on ports 28960, 28961 and 28962 respectively.
 
+---
+
 ### Logging
 
 Set the log level with environment variable `Q3RCON_LOGLEVEL`.
@@ -55,6 +64,8 @@ Acceptable values are:
 
 If not set it will default to `info`.
 
+---
+
 ### Special Thanks
 
 [Dylan][user_link] For writing [lilproxy][lilproxy_url].