diff --git a/rtmp/rtmp.go b/rtmp/rtmp.go
index f868b30c..5509998e 100644
--- a/rtmp/rtmp.go
+++ b/rtmp/rtmp.go
@@ -424,8 +424,8 @@ func (s *session) Write(data []byte) (int, error) {
 		return 0, Err(1)
 	}
 
-	// if C_RTMP_Write(s.rtmp, data) == 0 {
-	if C.RTMP_Write(s.rtmp, (*C.char)(unsafe.Pointer(&data[0])), C.int(len(data))) == 0 {
+	if C_RTMP_Write(s.rtmp, data) == 0 {
+		//if C.RTMP_Write(s.rtmp, (*C.char)(unsafe.Pointer(&data[0])), C.int(len(data))) == 0 {
 		return 0, Err(2)
 	}
 	return len(data), nil