diff --git a/usr.bin/mk_cmds/mk_cmds.c b/usr.bin/mk_cmds/mk_cmds.c
index 7b39957dbbb9..829885971bd7 100644
--- a/usr.bin/mk_cmds/mk_cmds.c
+++ b/usr.bin/mk_cmds/mk_cmds.c
@@ -37,7 +37,7 @@ main(argc, argv)
     if (argc != 2) {
 	fputs("Usage: ", stderr);
 	fputs(argv[0], stderr);
-	fputs("cmdtbl.ct\n", stderr);
+	fputs(" cmdtbl.ct\n", stderr);
 	exit(1);
     }