diff --git a/cmd/torrent-verify/main.go b/cmd/torrent-verify/main.go
index dfd14a74..d7b2dd3d 100644
--- a/cmd/torrent-verify/main.go
+++ b/cmd/torrent-verify/main.go
@@ -46,6 +46,7 @@ func verifyTorrent(info *metainfo.Info, root string) error {
 		}
 		span.Append(mm)
 	}
+	span.InitIndex()
 	for i := range iter.N(info.NumPieces()) {
 		p := info.Piece(i)
 		hash := sha1.New()