diff --git a/scrotwm.1 b/scrotwm.1
index a0d249b..0539b77 100644
--- a/scrotwm.1
+++ b/scrotwm.1
@@ -605,6 +605,10 @@ bind[reset] = Mod4+q # bind Windows-key + q to reset
 bind[] = Mod1+q # unbind Alt + q
 .Ed
 .Pp
+To use the currently defined
+.Ic modkey ,
+specify MOD as the modifier key.
+.Pp
 Multiple key combinations may be bound to the same action.
 .Sh KEYBOARD MAPPING FILES
 Keyboard mapping files for several keyboard layouts are listed