fs/cmd/torrentfs/main.go | 2 +-

diff --git a/fs/cmd/torrentfs/main.go b/fs/cmd/torrentfs/main.go
index 3ebdc281d6cb41bd8296c309665298f24a68ea25..d35f5c2360bfb267df13fceea025ab9fbba8800f 100644
--- a/fs/cmd/torrentfs/main.go
+++ b/fs/cmd/torrentfs/main.go
@@ -84,7 +84,7 @@ 	if args.MountDir == "" {
 		os.Stderr.WriteString("y u no specify mountpoint?\n")
 		os.Exit(2)
 	}
-	conn, err := fuse.Mount(args.MountDir)
+	conn, err := fuse.Mount(args.MountDir, fuse.ReadOnly())
 	if err != nil {
 		return fmt.Errorf("mounting: %w", err)
 	}