diff --git a/content/docs/user-manual/window-sync.mdx b/content/docs/user-manual/window-sync.mdx
index 5ccc9c10..58fd7533 100644
--- a/content/docs/user-manual/window-sync.mdx
+++ b/content/docs/user-manual/window-sync.mdx
@@ -69,6 +69,7 @@ Unlike previous implementation where Essentials and pinned tabs were duplicated
 
 Alongside Window Sync, Zen provides new session backup system that regularly saved tab state of all synced windows, including changes to their status (essentials, pinning, split view). This significantly improves the accuracy of session restoration by Zen and facilitates manual restoration if tabs are lost. Follow these steps to restore:
 
+- Make sure that `Open previous windows and tabs` in `Settings` -> `General` -> `Startup` is turned on. 
 - Open your current Zen profile directory. Open `about:support` and find `Profile Directory` -> Click on `Open directory`
 - **Make sure Zen is fully closed.**