diff --git a/rtmp/packet.go b/rtmp/packet.go
index 23671eac..eb2c8aa9 100644
--- a/rtmp/packet.go
+++ b/rtmp/packet.go
@@ -316,7 +316,7 @@ func (pkt *packet) writeTo(c *Conn, queue bool) error {
 
 	// The complete packet starts from headerSize _before_ the start the body.
 	// origIdx is the original offset, which will be 0 for a full (12-byte) header or 11 for a minimum (1-byte) header.
-	headBytes := pkt.buf
+	buf := pkt.buf
 	hSize := headerSizes[pkt.headerType]
 	origIdx := fullHeaderSize - hSize
 
@@ -356,16 +356,16 @@ func (pkt *packet) writeTo(c *Conn, queue bool) error {
 	case 2:
 		ch |= 1
 	}
-	headBytes[headerIdx] = ch
+	buf[headerIdx] = ch
 	headerIdx++
 
 	if cSize != 0 {
 		tmp := pkt.channel - 64
-		headBytes[headerIdx] = byte(tmp & 0xff)
+		buf[headerIdx] = byte(tmp & 0xff)
 		headerIdx++
 
 		if cSize == 2 {
-			headBytes[headerIdx] = byte(tmp >> 8)
+			buf[headerIdx] = byte(tmp >> 8)
 			headerIdx++
 		}
 	}
@@ -375,24 +375,24 @@ func (pkt *packet) writeTo(c *Conn, queue bool) error {
 		if ts > 0xffffff {
 			tmp = 0xffffff
 		}
-		amf.EncodeInt24(headBytes[headerIdx:], tmp)
+		amf.EncodeInt24(buf[headerIdx:], tmp)
 		headerIdx += 3 // 24bits
 	}
 
 	if headerSizes[pkt.headerType] > 4 {
-		amf.EncodeInt24(headBytes[headerIdx:], pkt.bodySize)
+		amf.EncodeInt24(buf[headerIdx:], pkt.bodySize)
 		headerIdx += 3 // 24bits
-		headBytes[headerIdx] = pkt.packetType
+		buf[headerIdx] = pkt.packetType
 		headerIdx++
 	}
 
 	if headerSizes[pkt.headerType] > 8 {
-		binary.LittleEndian.PutUint32(headBytes[headerIdx:headerIdx+4], uint32(pkt.info))
+		binary.LittleEndian.PutUint32(buf[headerIdx:headerIdx+4], uint32(pkt.info))
 		headerIdx += 4 // 32bits
 	}
 
 	if ts >= 0xffffff {
-		amf.EncodeInt32(headBytes[headerIdx:], ts)
+		amf.EncodeInt32(buf[headerIdx:], ts)
 		headerIdx += 4 // 32bits
 	}
 
@@ -402,7 +402,7 @@ func (pkt *packet) writeTo(c *Conn, queue bool) error {
 	if c.deferred == nil {
 		// Defer sending small audio packets (at most once).
 		if pkt.packetType == packetTypeAudio && size < chunkSize {
-			c.deferred = headBytes[origIdx:][:size+hSize]
+			c.deferred = buf[origIdx:][:size+hSize]
 			c.log(DebugLevel, pkg+"deferred sending packet", "size", size, "la", c.link.conn.LocalAddr(), "ra", c.link.conn.RemoteAddr())
 			return nil
 		}
@@ -424,7 +424,7 @@ func (pkt *packet) writeTo(c *Conn, queue bool) error {
 		if chunkSize > size {
 			chunkSize = size
 		}
-		bytes := headBytes[origIdx:][:chunkSize+hSize]
+		bytes := buf[origIdx:][:chunkSize+hSize]
 		if c.deferred != nil {
 			// Prepend the previously deferred packet and write it with the current one.
 			c.log(DebugLevel, pkg+"combining deferred packet", "size", len(c.deferred))
@@ -450,18 +450,18 @@ func (pkt *packet) writeTo(c *Conn, queue bool) error {
 				hSize += 4
 			}
 
-			headBytes[origIdx] = 0xc0 | ch
+			buf[origIdx] = 0xc0 | ch
 
 			if cSize != 0 {
 				tmp := int(pkt.channel) - 64
-				headBytes[origIdx+1] = byte(tmp)
+				buf[origIdx+1] = byte(tmp)
 
 				if cSize == 2 {
-					headBytes[origIdx+2] = byte(tmp >> 8)
+					buf[origIdx+2] = byte(tmp >> 8)
 				}
 			}
 			if ts >= 0xffffff {
-				extendedTimestamp := headBytes[origIdx+1+cSize:]
+				extendedTimestamp := buf[origIdx+1+cSize:]
 				amf.EncodeInt32(extendedTimestamp[:4], ts)
 			}
 		}