diff --git a/app/javascript/mastodon/actions/app.ts b/app/javascript/mastodon/actions/app.ts
index 0acfbfae7a41e956900e78a468be9b3d37b80987..50fd317a655c854ed1a95fd1d8b8c86b2c6256f6 100644
--- a/app/javascript/mastodon/actions/app.ts
+++ b/app/javascript/mastodon/actions/app.ts
@@ -1,10 +1,11 @@
 import { createAction } from '@reduxjs/toolkit';
+import type { LayoutType } from '../is_mobile';
 
 export const focusApp = createAction('APP_FOCUS');
 export const unfocusApp = createAction('APP_UNFOCUS');
 
 type ChangeLayoutPayload = {
-  layout: 'mobile' | 'single-column' | 'multi-column';
+  layout: LayoutType;
 };
 export const changeLayout =
   createAction<ChangeLayoutPayload>('APP_LAYOUT_CHANGE');