client.go | 2 +-

diff --git a/client.go b/client.go
index 08e1341608470940c0bd951c9f66267d683edf1d..4888984353d2424febdd8fafd9995ec599ec5786 100644
--- a/client.go
+++ b/client.go
@@ -463,7 +463,7 @@ 			if c.PeerPieces != nil {
 				err = errors.New("received unexpected bitfield")
 				break
 			}
-			c.PeerPieces = msg.Bitfield[:len(t.NumPieces())]
+			c.PeerPieces = msg.Bitfield[:t.NumPieces()]
 			for index, has := range c.PeerPieces {
 				if has {
 					me.peerGotPiece(t, c, index)