diff --git a/git-send-email.perl b/git-send-email.perl
index 488d8947da..b50c963793 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -549,7 +549,7 @@ if (@files) {
 	usage();
 }
 
-sub get_patch_subject($) {
+sub get_patch_subject {
 	my $fn = shift;
 	open (my $fh, '<', $fn);
 	while (my $line = <$fh>) {