diff --git a/packages/data-center/src/provider/affine/affine.ts b/packages/data-center/src/provider/affine/affine.ts
index cb567bc8f..597fa2428 100644
--- a/packages/data-center/src/provider/affine/affine.ts
+++ b/packages/data-center/src/provider/affine/affine.ts
@@ -63,7 +63,7 @@ export class AffineProvider extends BaseProvider {
     assert(room);
     this.linkLocal(workspace);
     const updates = await this._apis.downloadWorkspace(room);
-    if (updates) {
+    if (updates && updates.byteLength) {
       await new Promise(resolve => {
         doc.once('update', resolve);
         applyUpdate(doc, new Uint8Array(updates));
diff --git a/packages/data-center/src/provider/affine/apis/index.ts b/packages/data-center/src/provider/affine/apis/index.ts
index 21d0c8e73..d3ac78088 100644
--- a/packages/data-center/src/provider/affine/apis/index.ts
+++ b/packages/data-center/src/provider/affine/apis/index.ts
@@ -7,7 +7,7 @@ import * as workspace from './workspace.js';
 import { token } from './token.js';
 
 export type Apis = typeof user &
-  typeof workspace & {
+  Omit<typeof workspace, 'WorkspaceType' | 'PermissionType'> & {
     signInWithGoogle: ReturnType<typeof getAuthorizer>[0];
     onAuthStateChanged: ReturnType<typeof getAuthorizer>[1];
   } & { token: typeof token };