diff --git a/sys/select_darwin.go b/sys/select_bsd.go
similarity index 78%
rename from sys/select_darwin.go
rename to sys/select_bsd.go
index 6c8186d1..0f5a5096 100644
--- a/sys/select_darwin.go
+++ b/sys/select_bsd.go
@@ -1,4 +1,4 @@
-// +build darwin
+// +build darwin dragonfly freebsd netbsd openbsd
 
 package sys