diff --git a/rtmp/rtmp_sys.go b/rtmp/rtmp_sys.go
deleted file mode 100644
index 13fdc361..00000000
--- a/rtmp/rtmp_sys.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package rtmp
-
-// #define SET_RCVTIMEO(tv,s)   int tv = s*1000
-// rtmp_sys.h +43
-func SET_RCVTIMEO(tv *int32, s int32) {
-	*tv = s * 1000
-}