diff --git a/src/net/tcpsockopt_unix.go b/src/net/tcpsockopt_unix.go
index c9f604c..c8970d1 100644
--- a/src/net/tcpsockopt_unix.go
+++ b/src/net/tcpsockopt_unix.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 freebsd linux netbsd solaris
+// +build freebsd linux netbsd
 
 package net