woops, i shouldnt be so presumtuous? about what the error will be
diff --git a/util-linux/mount.c b/util-linux/mount.c
index fa885cb..e511b79 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -395,7 +395,7 @@
 
 	if (optind + 1 < argc) {
 		if (realpath(argv[optind + 1], directory) == NULL) {
-			perror_msg_and_die("Invalid directory %s", directory);
+			perror_msg_and_die("%s", directory);
 		}
 	}