diff --git a/tmux.1 b/tmux.1
index 522de231..22982b11 100644
--- a/tmux.1
+++ b/tmux.1
@@ -2953,6 +2953,8 @@ Ctrl keys may be prefixed with
 .Ql C-
 or
 .Ql ^ ,
+Shift keys with
+.Ql S-
 and Alt (meta) with
 .Ql M- .
 In addition, the following special key names are accepted: