diff --git a/util/registry/torrent.py b/util/registry/torrent.py
index fe6ea49f0..d441bb3d6 100644
--- a/util/registry/torrent.py
+++ b/util/registry/torrent.py
@@ -43,6 +43,7 @@ def make_torrent(name, webseed, length, piece_length, pieces):
     'length': length,
     'piece length': piece_length,
     'pieces': pieces,
+    'private': 1,
   }
 
   return bencode.bencode({