diff --git a/builtin-run.c b/builtin-run.c
index b48c855..dca4526 100644
--- a/builtin-run.c
+++ b/builtin-run.c
@@ -164,8 +164,8 @@ static const struct option options[] = {
 	OPT_INCR('\0', "rng", &virtio_rng,
 			"Enable virtio Random Number Generator"),
 	OPT_STRING('\0', "dev", &dev, "device_file", "KVM device file"),
-	OPT_CALLBACK('\0', "virtio-9p", NULL, "dirname,tag_name",
-		     "Enable 9p over virtio", virtio_9p_rootdir_parser),
+	OPT_CALLBACK('\0', "9p", NULL, "dir_to_share,tag_name",
+		     "Enable virtio 9p to share files between host and guest", virtio_9p_rootdir_parser),
 	OPT_BOOLEAN('\0', "balloon", &balloon, "Enable virtio balloon"),
 	OPT_BOOLEAN('\0', "vnc", &vnc, "Enable VNC framebuffer"),
 	OPT_BOOLEAN('\0', "sdl", &sdl, "Enable SDL framebuffer"),