diff --git a/rtmp/rtmp.go b/rtmp/rtmp.go
index c79f8352..56c9a653 100644
--- a/rtmp/rtmp.go
+++ b/rtmp/rtmp.go
@@ -260,7 +260,7 @@ func handlePacket(s *Session, pkt *packet) error {
 	case packetTypeClientBW:
 		s.clientBW = amf.DecodeInt32(pkt.body[:4])
 		if pkt.bodySize > 4 {
-			s.clientBW2 = uint32(pkt.body[4])
+			s.clientBW2 = pkt.body[4]
 		} else {
 			s.clientBW2 = 0xff
 		}
diff --git a/rtmp/session.go b/rtmp/session.go
index 766522d5..8da2626b 100644
--- a/rtmp/session.go
+++ b/rtmp/session.go
@@ -51,7 +51,7 @@ type Session struct {
 	streamID             int32
 	serverBW             uint32
 	clientBW             uint32
-	clientBW2            uint32
+	clientBW2            uint8
 	isPlaying            bool
 	numInvokes           int32
 	methodCalls          []method