diff --git a/protocol/rtcp/rtcp.go b/protocol/rtcp/rtcp.go
index aedb57e7..1c9892bb 100644
--- a/protocol/rtcp/rtcp.go
+++ b/protocol/rtcp/rtcp.go
@@ -129,7 +129,7 @@ func (h Header) writeHeader(buf []byte, l int) {
 	buf[0] = h.Version<<6 | asByte(h.Padding)<<5 | 0x1f&h.ReportCount
 	buf[1] = h.Type
 	binary.BigEndian.PutUint16(buf[2:], uint16(l))
-	buf[4] = byte(h.SenderSSRC)
+	binary.BigEndian.PutUint32(buf[4:], h.SenderSSRC)
 }
 
 func asByte(b bool) byte {
diff --git a/protocol/rtcp/rtcp_test.go b/protocol/rtcp/rtcp_test.go
index 17ed8c5a..31588e53 100644
--- a/protocol/rtcp/rtcp_test.go
+++ b/protocol/rtcp/rtcp_test.go
@@ -41,6 +41,8 @@ func TestReceiverReportBytes(t *testing.T) {
 	}
 
 	got := report.Bytes()
+	t.Logf("Got: %v\n", got)
+	t.Logf("Want: %v\n", expect)
 	if !bytes.Equal(got, expect) {
 		t.Errorf("did not get expected result. \nGot: %v\nWant: %v\n", got, expect)
 	}