1 files changed, 2 insertions, 0 deletions
diff --git a/git-send-email.perl b/git-send-email.perl
index 10c450ef68..37dfd4b8c5 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -1768,6 +1768,8 @@ sub pre_process_file {
 	$subject = $initial_subject;
 	$message = "";
 	$message_num++;
+	undef $message_id;
+
 	# First unfold multiline header fields
 	while(<$fh>) {
 		last if /^\s*$/;