diff --git a/rtmp/rtmp.go b/rtmp/rtmp.go
index 6975eaed..f2c530f5 100644
--- a/rtmp/rtmp.go
+++ b/rtmp/rtmp.go
@@ -703,8 +703,7 @@ func C_RTMP_Connect(r *C.RTMP, cp *C.RTMPPacket) int {
 	if r.Link.hostname.av_len == 0 {
 		return 0
 	}
-	var tmp C.sockaddr_in
-	memset((*byte)(unsafe.Pointer(&service)), 0, int(unsafe.Sizeof(tmp)))
+	memset((*byte)(unsafe.Pointer(&service)), 0, int(unsafe.Sizeof(service)))
 
 	// TODO: port this
 	service.sin_family = C.AF_INET