diff --git a/windows/installer/installer.go b/windows/installer/installer.go
index bbc138a..1d47f4b 100644
--- a/windows/installer/installer.go
+++ b/windows/installer/installer.go
@@ -1,3 +1,5 @@
+// +build windows
+
 package main
 
 import (
diff --git a/windows/launcher/launcher.go b/windows/launcher/launcher.go
index c001126..73da185 100644
--- a/windows/launcher/launcher.go
+++ b/windows/launcher/launcher.go
@@ -1,3 +1,4 @@
+// +build windows
 //go:generate goversioninfo -icon=aminal.ico
 
 /*
diff --git a/windows/winutil/winutil.go b/windows/winutil/winutil.go
index 8b31fa4..99e7c5b 100644
--- a/windows/winutil/winutil.go
+++ b/windows/winutil/winutil.go
@@ -1,3 +1,5 @@
+// +build windows
+
 package winutil
 
 import (