diff --git a/v3/pkg/w32/menubar.go b/v3/pkg/w32/menubar.go
index 155eb0d1c..6b11c1e02 100644
--- a/v3/pkg/w32/menubar.go
+++ b/v3/pkg/w32/menubar.go
@@ -1,3 +1,5 @@
+//go:build windows
+
 package w32
 
 import (