(mail-setup-with-from): Fix custom type.

diff --git a/lisp/mail/sendmail.el b/lisp/mail/sendmail.el
index 4084cd8..9596b80 100644 (file)
--- a/lisp/mail/sendmail.el
+++ b/lisp/mail/sendmail.el
@@ -44,7 +44,7 @@
 
 (defcustom mail-setup-with-from t
   "Non-nil means insert `From:' field when setting up the message."
-  :type 'binary
+  :type 'boolean
   :group 'sendmail
   :version "22.1")