client.go | 8 ++++++--

diff --git a/client.go b/client.go
index 2d6bbab559f4ad0479ecf35e7b21251e4fb192f2..1f11990051f8a0aa21fece170c9690387d127e5f 100644
--- a/client.go
+++ b/client.go
@@ -275,8 +275,12 @@ }
 
 // Calculates the number of pieces to set to Readahead priority, after the
 // Now, and Next pieces.
-func readaheadPieces(readahead, pieceLength int64) int {
-	return int((readahead+pieceLength-1)/pieceLength - 1)
+func readaheadPieces(readahead, pieceLength int64) (ret int) {
+	ret = int((readahead+pieceLength-1)/pieceLength - 1)
+	if ret < 2 {
+		ret = 2
+	}
+	return
 }
 
 func (cl *Client) readRaisePiecePriorities(t *torrent, off, readaheadBytes int64) {