diff --git a/lisp/mail/rmailsum.el b/lisp/mail/rmailsum.el
index 7b2e2e21d9d..1d7fa475779 100644
--- a/lisp/mail/rmailsum.el
+++ b/lisp/mail/rmailsum.el
@@ -814,6 +814,9 @@ Commands for sorting the summary:
 (define-key rmail-summary-mode-map [menu-bar summary]
   (cons "Summary" (make-sparse-keymap "Summary")))
 
+(define-key rmail-summary-mode-map [menu-bar summary senders]
+  '("By Senders..." . rmail-summary-by-senders))
+
 (define-key rmail-summary-mode-map [menu-bar summary labels]
   '("By Labels..." . rmail-summary-by-labels))