diff --git a/apps/assisted-ui/src/components/App.tsx b/apps/assisted-ui/src/components/App.tsx
index 6f807997f9..758129b100 100755
--- a/apps/assisted-ui/src/components/App.tsx
+++ b/apps/assisted-ui/src/components/App.tsx
@@ -13,7 +13,7 @@ window.__app__ = { OCM };
 export const App: React.FC = () => (
   <BrowserRouter basename={Config.routeBasePath}>
     <CompatRouter>
-      <Page header={<Header />} isManagedSidebar defaultManagedSidebarIsOpen={false}>
+      <Page masthead={<Header />} isManagedSidebar defaultManagedSidebarIsOpen={false}>
         <UILibRoutes
           allEnabledFeatures={Features.STANDALONE_DEPLOYMENT_ENABLED_FEATURES}
           additionalComponents={refreshToken ? <ChatBot /> : undefined}