$NetBSD: patch-az,v 1.1 2006/04/21 02:07:54 wulf Exp $
--- box_rout.c.orig	2006-04-14 12:46:43.000000000 +0930
+++ box_rout.c	2006-04-14 12:47:09.000000000 +0930
@@ -1837,7 +1837,7 @@
 		    strsub(adesc, hs, i + 1, k - i - 1);
 		    strdelete(hs, 1, k);
 		    get_word(hs, w1);
-		    if (*w1 != '\0' && isalpha(w1[0]))
+		    if (*w1 != '\0' && isalpha((u_char) w1[0]))
 		      sprintf(adesc + strlen(adesc), " %s", w1);
 		  }
 		}