$NetBSD: patch-ac,v 1.1 2008/11/17 13:30:34 ahoka Exp $

--- command_mode.c.orig	2007-07-27 16:52:13.000000000 +0200
+++ command_mode.c
@@ -495,7 +495,7 @@ inside:
 		goto err;
 
 	if (count == 1) {
-		switch (tolower(*arg)) {
+		switch (tolower((unsigned char)*arg)) {
 		case 'h':
 			seek *= 60;
 		case 'm':