diff --git a/exchange/bitswap/bitswap.go b/exchange/bitswap/bitswap.go
index 4c2fe84a402c4e8865a87564d6878dad17c82ec8..3ee87106925c06123eb167572e6e4906acdfe64f 100644
--- a/exchange/bitswap/bitswap.go
+++ b/exchange/bitswap/bitswap.go
@@ -155,10 +155,6 @@ func (bs *bitswap) send(ctx context.Context, p *peer.Peer, m bsmsg.BitSwapMessag
 	bs.strategy.MessageSent(p, m)
 }
 
-func numBytes(b blocks.Block) int {
-	return len(b.Data)
-}
-
 func (bs *bitswap) sendToPeersThatWant(ctx context.Context, block blocks.Block) {
 	for _, p := range bs.strategy.Peers() {
 		if bs.strategy.BlockIsWantedByPeer(block.Key(), p) {