config.go | 2 +-

diff --git a/config.go b/config.go
index ea947de1e7e2e2caf414985ebdbeed03cb7ac833..008a0ad0508a06680b9f104811bad2fbc9e39b4f 100644
--- a/config.go
+++ b/config.go
@@ -32,7 +32,7 @@ 	// not altruistic, we'll upload slightly more than we download from each
 	// peer.
 	Seed bool `long:"seed"`
 	// Events are data bytes sent in pieces. The burst must be large enough to
-	// fit a whole chunk.
+	// fit a whole chunk, which is usually 16 KiB.
 	UploadRateLimiter *rate.Limiter
 	// The events are bytes read from connections. The burst must be bigger
 	// than the largest Read performed on a Conn minus one. This is likely to