diff --git a/lib/mount.c b/lib/mount.c
index 6a9da9e..14c9bdf 100644
--- a/lib/mount.c
+++ b/lib/mount.c
@@ -83,2 +83,3 @@ struct mount_opts {
 static const struct fuse_opt fuse_mount_opts[] = {
+	FUSE_OPT_KEY("acl",			KEY_KERN_OPT),
 	FUSE_MOUNT_OPT("allow_other",		allow_other),
@@ -127,2 +128,4 @@ static void mount_help(void)
 	fprintf(stderr,
+"    -o acl                 enable access control lists (requires FS\n"
+"                           support and default_permissions enabled)\n"
 "    -o allow_other         allow access to other users\n"
-- 
2.0.0-rc0