diff --git a/site/src/server.js b/site/src/server.js
index 86c3bd5dc3..c286975ffc 100644
--- a/site/src/server.js
+++ b/site/src/server.js
@@ -4,7 +4,7 @@ import sirv from 'sirv';
 import * as sapper from '@sapper/server';
 import { sanitize_user, authenticate } from './utils/auth';
 
-const port = process.env.port || 3000;
+const port = process.env.PORT || 3000;
 
 const app = polka({
 	onError: (err, req, res) => {