From 249d440df95b3c0219d128a5fdf266522f91a9cb Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Fri, 3 Jul 1998 21:17:47 +0000
Subject: [PATCH] (diary-mail-addr): Fix custom type.

---
 lisp/calendar/diary-lib.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/calendar/diary-lib.el b/lisp/calendar/diary-lib.el
index 2a27d506eb5..8a46d4dcb66 100644
--- a/lisp/calendar/diary-lib.el
+++ b/lisp/calendar/diary-lib.el
@@ -589,7 +589,7 @@ is created."
   (if (boundp 'user-mail-address) user-mail-address nil)
   "*Email address that `diary-mail-entries' will send email to."
   :group 'diary
-  :type 'string
+  :type '(choice string (const nil))
   :version "20.3")
 
 (defcustom diary-mail-days 7
-- 
2.39.5