diff --git a/README.md b/README.md
index a79bac5..4455fd3 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ a terminal window:
 git clone https://gitea.polaris-1.work/teknomunk/apogee.git
 cd apogee
 ./build.sh
-./apogee
+./apogee --listen=$PORT
 ````
 
 If everything worked correctly, you should see something similar to the following:
@@ -51,6 +51,6 @@ Starting section 5 (fetch)
 ````
 
 The listening port is chosen at random each time the program is run until setup, then the configured
-port is used. Open a browser and navigate to http://${hostnameOrIPAddress}:${port}/, then fill in the
+port is used. Open a browser and navigate to http://${hostnameOrIPAddress}:${PORT}/, then fill in the
 required information.