diff --git a/packages/ra-ui-materialui/src/layout/Layout.tsx b/packages/ra-ui-materialui/src/layout/Layout.tsx
index 97073ace5ba..3edc0e5aa24 100644
--- a/packages/ra-ui-materialui/src/layout/Layout.tsx
+++ b/packages/ra-ui-materialui/src/layout/Layout.tsx
@@ -24,7 +24,7 @@ import { ThemeOptions } from '@material-ui/core';
 import { ComponentPropType, CoreLayoutProps } from 'ra-core';
 import compose from 'lodash/flowRight';
 
-import DefaultAppBar from './AppBar';
+import DefaultAppBar, { AppBarProps } from './AppBar';
 import DefaultSidebar from './Sidebar';
 import DefaultMenu, { MenuProps } from './Menu';
 import DefaultNotification from './Notification';
@@ -186,11 +186,7 @@ class LayoutWithoutTheme extends Component<
 export interface LayoutProps
     extends CoreLayoutProps,
         Omit<HtmlHTMLAttributes<HTMLDivElement>, 'title'> {
-    appBar?: ComponentType<{
-        title?: string | ReactElement<any>;
-        open?: boolean;
-        logout?: ReactNode;
-    }>;
+    appBar?: ComponentType<AppBarProps>;
     classes?: any;
     className?: string;
     error?: ComponentType<{