diff --git a/osbase/nvme/cmd_unsupported.go b/osbase/nvme/cmd_unsupported.go
index 747a33d..cd2ab08 100644
--- a/osbase/nvme/cmd_unsupported.go
+++ b/osbase/nvme/cmd_unsupported.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 //go:build !linux
 
 package nvme