diff --git a/wgengine/router/router_darwin_support.go b/wgengine/router/router_darwin_support.go
index 9a3e0c864..506a6ba17 100644
--- a/wgengine/router/router_darwin_support.go
+++ b/wgengine/router/router_darwin_support.go
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build linux darwin
-
 package router
 
 // SetRoutesFunc applies the given router settings to the OS network