piece.go   | 1 +
 torrent.go | 1 +

diff --git a/piece.go b/piece.go
index 6598859523150abd9cf78bcb6df5e577ed0484cd..6808413a9892c3b069a7ee683240964a7779d651 100644
--- a/piece.go
+++ b/piece.go
@@ -178,6 +178,7 @@ 	}
 	return p.length() - p.numDirtyBytes()
 }
 
+// Forces the piece data to be rehashed.
 func (p *Piece) VerifyData() {
 	p.t.cl.lock()
 	defer p.t.cl.unlock()
diff --git a/torrent.go b/torrent.go
index 26f23869c906615e15f9512dd8eda5de5c95619c..9b1a920b315feea380f466b93691d752bdb6209b 100644
--- a/torrent.go
+++ b/torrent.go
@@ -1666,6 +1666,7 @@ 	t.updatePiecePriority(pieceIndex)
 	go t.verifyPiece(pieceIndex)
 }
 
+// Forces all the pieces to be re-hashed. See also Piece.VerifyData.
 func (t *Torrent) VerifyData() {
 	for i := pieceIndex(0); i < t.NumPieces(); i++ {
 		t.Piece(i).VerifyData()