diff --git a/packages/common/components/src/ui/lnb/index.tsx b/packages/common/components/src/ui/lnb/index.tsx
index 3339a6f26..1c7722a36 100644
--- a/packages/common/components/src/ui/lnb/index.tsx
+++ b/packages/common/components/src/ui/lnb/index.tsx
@@ -94,7 +94,7 @@ export function LNB({
     enabled: !isLoggedIn,
   });
 
-  const menuList = isLoggedIn
+  const menuList: MenuItem[] | undefined = isLoggedIn
     ? previewMode
       ? previewTreeMenuListData
       : menuListData