diff --git a/packages/workspace/src/affine/sync.ts b/packages/workspace/src/affine/sync.ts
index 1e47bde0da..c72d5d64f9 100644
--- a/packages/workspace/src/affine/sync.ts
+++ b/packages/workspace/src/affine/sync.ts
@@ -35,6 +35,9 @@ const downloadRecursive = async (
 };
 
 export async function startSync() {
+  if (!environment.isDesktop) {
+    return;
+  }
   abortController = new AbortController();
   const signal = abortController.signal;
   const workspaces = await CRUD.list();