diff --git a/gertty/mywid.py b/gertty/mywid.py
index df059b9..696219a 100644
--- a/gertty/mywid.py
+++ b/gertty/mywid.py
@@ -20,6 +20,7 @@ Global Keys
 <F1> or <?> Help
 <ESC>       Back to previous screen
 <CTRL-Q>    Quit Gertty
+<CTRL-O>    Open Change
 """
 
 class TextButton(urwid.Button):