diff -urpN busybox-1.17.0/debianutils/mktemp.c busybox-1.17.0-mktemp/debianutils/mktemp.c
--- busybox-1.17.0/debianutils/mktemp.c	2010-06-24 04:40:43.000000000 +0200
+++ busybox-1.17.0-mktemp/debianutils/mktemp.c	2010-07-12 03:42:48.000000000 +0200
@@ -50,7 +50,8 @@ int mktemp_main(int argc UNUSED_PARAM, c
 	opts = getopt32(argv, "dqtp:", &path);
 
 	chp = argv[optind] ? argv[optind] : xstrdup("tmp.XXXXXX");
-	chp = concat_path_file(path, chp);
+	if (chp[0] != '/' || (opts & 8))
+		chp = concat_path_file(path, chp);
 
 	if (opts & 1) { /* -d */
 		if (mkdtemp(chp) == NULL)