diff --git a/windows/syscall_test.go b/windows/syscall_test.go
index af3ff32..fd4a015 100644
--- a/windows/syscall_test.go
+++ b/windows/syscall_test.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build windows
 // +build windows
 
 package windows_test