diff --git a/src/layouts/partial-panel-resolver.ts b/src/layouts/partial-panel-resolver.ts
index 6035c27713..612ced46c5 100644
--- a/src/layouts/partial-panel-resolver.ts
+++ b/src/layouts/partial-panel-resolver.ts
@@ -43,7 +43,7 @@ const COMPONENTS = {
 class PartialPanelResolver extends HassRouterPage {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
-  @property() public narrow?: boolean;
+  @property({ type: Boolean }) public narrow?: boolean;
 
   private _waitForStart = false;
 
@@ -206,7 +206,7 @@ class PartialPanelResolver extends HassRouterPage {
       this._currentPage &&
       !this.hass.panels[this._currentPage]
     ) {
-      if (this.hass.config.state !== STATE_NOT_RUNNING) {
+      if (this.hass.config.state === STATE_NOT_RUNNING) {
         this._waitForStart = true;
         if (this.lastChild) {
           this.removeChild(this.lastChild);