diff --git a/pkg/utils/du_unix.go b/pkg/utils/du_unix.go
index 494e9ed5..6b916ede 100644
--- a/pkg/utils/du_unix.go
+++ b/pkg/utils/du_unix.go
@@ -1,3 +1,5 @@
+//go:build !windows
+
 /*
    Copyright The Accelerated Container Image Authors