diff --git a/Documentation/git-mailsplit.txt b/Documentation/git-mailsplit.txt
index 5cc94ec53d..a634485281 100644
--- a/Documentation/git-mailsplit.txt
+++ b/Documentation/git-mailsplit.txt
@@ -7,7 +7,7 @@ git-mailsplit - Simple UNIX mbox splitter program
 
 SYNOPSIS
 --------
-'git mailsplit' [-b] [-f<nn>] [-d<prec>] -o<directory> [--] [<mbox>|<Maildir>...]
+'git mailsplit' [-b] [-f<nn>] [-d<prec>] [--keep-cr] -o<directory> [--] [<mbox>|<Maildir>...]
 
 DESCRIPTION
 -----------
@@ -43,6 +43,9 @@ OPTIONS
 	Skip the first <nn> numbers, for example if -f3 is specified,
 	start the numbering with 0004.
 
+--keep-cr::
+	Do not remove `\r` from lines ending with `\r\n`.
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>
diff --git a/builtin-mailsplit.c b/builtin-mailsplit.c
index 207e358ed1..cdfc1b7042 100644
--- a/builtin-mailsplit.c
+++ b/builtin-mailsplit.c
@@ -10,7 +10,7 @@
 #include "strbuf.h"
 
 static const char git_mailsplit_usage[] =
-"git mailsplit [-d<prec>] [-f<n>] [-b] -o<directory> [<mbox>|<Maildir>...]";
+"git mailsplit [-d<prec>] [-f<n>] [-b] [--keep-cr] -o<directory> [<mbox>|<Maildir>...]";
 
 static int is_from_line(const char *line, int len)
 {