diff --git a/packages/app/src/pages/affine.tsx b/packages/app/src/pages/affine.tsx
index a0c3ee1cd..4ac65fd36 100644
--- a/packages/app/src/pages/affine.tsx
+++ b/packages/app/src/pages/affine.tsx
@@ -16,7 +16,7 @@ const Affine = () => {
   const [show, setShow] = useState(false);
   return (
     <>
-      <StyledHeader>
+      <StyledHeader data-tauri-drag-region={window.CLIENT_APP}>
         <ThemeModeSwitch></ThemeModeSwitch>
         <button
           onClick={() => {