diff --git a/list_same/list_same b/list_same/list_same
index b3ef499..9844607 100755
--- a/list_same/list_same
+++ b/list_same/list_same
@@ -73,7 +73,7 @@ sub get_size {
 }
 
 # same md5 calculation i use in mv_wrap
-sub calc_md5($file) {
+sub calc_md5($) {
 	my ($file, $digest);
 	$file = shift;
 	$md5 = Digest::MD5->new;