diff --git a/Readme_release.txt b/Readme_release.txt
index 5749d1e..58382af 100644
--- a/Readme_release.txt
+++ b/Readme_release.txt
@@ -104,6 +104,7 @@ Do not run more than one steam game with the same appid at the same time on the
 
 Overlay (Note: at the moment this feature is only enabled in the windows experimental builds):
 The overlay can be disabled by putting a file named disable_overlay.txt in the steam_settings folder. This is for games that depend on the steam overlay to let people join multiplayer games.
+Use SHIFT-TAB to open the overlay.
 
 Controller (Note: at the moment this feature is only enabled in the windows experimental builds and the linux builds):
 SteamController/SteamInput support is limited to XInput controllers. If your controller is not XInput, there are many tools (at least for windows) that you can use to make it emulate an XInput one.