diff --git a/docs/api/auto-updater.md b/docs/api/auto-updater.md
index 77d3e4c4d514..cc6c7a189871 100644
--- a/docs/api/auto-updater.md
+++ b/docs/api/auto-updater.md
@@ -118,6 +118,9 @@ Returns `String` - The current update feed URL.
 Asks the server whether there is an update. You must call `setFeedURL` before
 using this API.
 
+**Note:** If an update is available it will be downloaded automatically.
+Calling `autoUpdater.checkForUpdates()` twice will download the update two times.
+
 ### `autoUpdater.quitAndInstall()`
 
 Restarts the app and installs the update after it has been downloaded. It