diff --git a/client/app.js b/client/app.js
index 0512727..1217f09 100644
--- a/client/app.js
+++ b/client/app.js
@@ -420,7 +420,7 @@ export class App extends decorate(class {}) {
         's': 'MoveDown',
         'd': 'MoveRight',
       },
-      connectionUrl: window.location.href,
+      connectionUrl: window.location.protocol + '//' + window.location.hostname + ':8420/',
       doPhysicsSimulation: true,
       inputFrequency: 1 / 60,
       pointerMovementFrequency: 1 / 15,