diff --git a/cast/src/receiver/layout/hc-demo.ts b/cast/src/receiver/layout/hc-demo.ts
index 763d6baa59..a5822ebe97 100644
--- a/cast/src/receiver/layout/hc-demo.ts
+++ b/cast/src/receiver/layout/hc-demo.ts
@@ -33,10 +33,10 @@ class HcDemo extends HassElement {
 
   protected firstUpdated(changedProps) {
     super.firstUpdated(changedProps);
-    this._initialize();
+    this._initializeHass();
   }
 
-  private async _initialize() {
+  private async _initializeHass() {
     const initial: Partial<MockHomeAssistant> = {
       // Override updateHass so that the correct hass lifecycle methods are called
       updateHass: (hassUpdate: Partial<HomeAssistant>) =>
diff --git a/demo/src/ha-demo.ts b/demo/src/ha-demo.ts
index 921420e45b..70bcbb50d4 100644
--- a/demo/src/ha-demo.ts
+++ b/demo/src/ha-demo.ts
@@ -22,9 +22,9 @@ import { mockTemplate } from "./stubs/template";
 import { mockTranslations } from "./stubs/translations";
 
 class HaDemo extends HomeAssistantAppEl {
-  protected async _initialize() {
+  protected async _initializeHass() {
     const initial: Partial<MockHomeAssistant> = {
-      panelUrl: (this as any).panelUrl,
+      panelUrl: (this as any)._panelUrl,
       // Override updateHass so that the correct hass lifecycle methods are called
       updateHass: (hassUpdate: Partial<HomeAssistant>) =>
         this._updateHass(hassUpdate),