diff --git a/tangostationcontrol/tangostationcontrol/devices/README.md b/tangostationcontrol/tangostationcontrol/devices/README.md
index 42035706c0c2bdb79b75f94a26fe9a854d81a2bf..d7c5a64a95fa9f43c7a2524a71cf1379e6527341 100644
--- a/tangostationcontrol/tangostationcontrol/devices/README.md
+++ b/tangostationcontrol/tangostationcontrol/devices/README.md
@@ -9,7 +9,7 @@ If a new device is added, it will (likely) need to be referenced in several plac
 - Adjust `CDB/LOFAR_ConfigDb.json` to create the device in the Tango device database,
 - Adjust `docker-compose/jupyter/ipython-profiles/stationcontrol-jupyter/startup/01-devices.py` to make an alias for it available in Jupyter,
 - Adjust `tangostationcontrol/tangostationcontrol/devices/boot.py` to add the device to the station initialisation sequence,
-- Add to `docker-compose/` to create a YaML file to start the device in a docker container. NOTE: it needs a unique 57xx port assigned (current _unused_ port value: 5721), a unique 58xx port for ZMQ events, and a unique 59xx port for ZMQ heartbeat
+- Add to `docker-compose/` to create a YaML file to start the device in a docker container. NOTE: it needs a unique 57xx port assigned (current _unused_ port value: 5722), a unique 58xx port for ZMQ events, and a unique 59xx port for ZMQ heartbeat
 - Adjust `tangostationcontrol/setup.cfg` to add an entry point for the device in the package installation,
 - Add to `tangostationcontrol/tangostationcontrol/integration_test/default/devices/` to add an integration test,
 - Adjust `sbin/run_integration_test.sh` to have the device started when running the integration tests,