1 files changed, 3 insertions, 0 deletions

diff --git a/miscutils/raidautorun.c b/miscutils/raidautorun.c
index c25630494..e5bce9a92 100644
--- a/miscutils/raidautorun.c
+++ b/miscutils/raidautorun.c
@@ -15,6 +15,9 @@
 
 int raidautorun_main(int argc, char **argv)
 {
+        if (argc != 2)
+                bb_show_usage();
+
         if (ioctl(xopen(argv[1], O_RDONLY), RAID_AUTORUN, NULL) != 0) {
                 bb_perror_msg_and_die("ioctl");
         }