doc/proto.texi    | 6 ++----
 internal/audio.go | 2 +-

diff --git a/doc/proto.texi b/doc/proto.texi
index ead9defe774257d82ee8bf191e9c75d169ffc8181a70aa0ec57bd0892a464b81..a8d9b3d6f6955018e0a59a2084321e3cc3da8d95e8cf63c332ff26dd585ac6b3 100644
--- a/doc/proto.texi
+++ b/doc/proto.texi
@@ -15,10 +15,8 @@ handshake procedure with the server and is shared among other participants.
 Stream identifier with packet counter are used as a nonce. Only 64-bits
 of Poly1305 are used.
 
-It is tuned for 32Kbps bandwidth. 24Kbps should be enough, but 40B of
-IPv6 header, +8B of Poly1305 authentication tag, +4B of stream
-identifier with the counter, +8B of UDP header for 50pps means also
-24Kbps of bandwidth only for overhead transmission.
+It is tuned for 24Kbps bandwidth. But remember that it has additional 8B
+of MAC tag, 4B VoRS, 8B UDP and 40B IPv6 headers.
 
 Each client handshakes with the server over TCP connection using
 @url{http://noiseprotocol.org/, Noise}-NK protocol pattern with
diff --git a/internal/audio.go b/internal/audio.go
index bc5f725be05a85ff3dbc2504d1c6b1b59741e5f4dab5d3fbbb5092cc76c7e1c4..fc0a266f1f5fccb2d10dbc52c976fa75b8fb53dc3e3f3fcbcff7aabea3961fda 100644
--- a/internal/audio.go
+++ b/internal/audio.go
@@ -3,7 +3,7 @@
 const (
 	Rate     = 48000
 	FrameMs  = 20
-	Bitrate  = 32000
+	Bitrate  = 24000
 	FrameLen = FrameMs * Rate / 1000
 	MaxLost  = 32
 )