diff --git a/config b/config
index 9042259..27db86f 100644
--- a/config
+++ b/config
@@ -28,7 +28,7 @@ cursor_shape = block
 # Hide links that are no longer valid in url select overlay mode
 filter_unmatched_urls = true
 
-# emit escape sequences for other keys modified by Control
+# emit escape sequences for extra modified keys
 #modify_other_keys = false
 
 [colors]
diff --git a/man/termite.config.5 b/man/termite.config.5
index 898fbdf..1697a2a 100644
--- a/man/termite.config.5
+++ b/man/termite.config.5
@@ -36,6 +36,9 @@ The font description for the terminal's font.
 The default window geometry for new terminal windows.
 .IP \fIicon_name\fR
 The name of the icon to be used for the terminal process.
+.IP \fImodify_other_keys\fR
+Emit escape sequences for extra keys, like the \fBmodifyOtherKeys\fR
+resource for \fBxterm\fR(1).
 .IP \fImouse_autohide\fR
 Automatically hide the mouse pointer when you start typing.
 .IP \fIscrollback_lines\fR