diff --git a/src/pkg/net/sock_bsd.go b/src/pkg/net/sock_bsd.go
index c59802fecb3..7025edf7421 100644
--- a/src/pkg/net/sock_bsd.go
+++ b/src/pkg/net/sock_bsd.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin freebsd
+// +build darwin freebsd openbsd
 
 // Sockets for BSD variants