diff --git a/osbase/fat32/fat32.go b/osbase/fat32/fat32.go
index c8d4ec9..e5c2e58 100644
--- a/osbase/fat32/fat32.go
+++ b/osbase/fat32/fat32.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package fat32 implements a writer for the FAT32 filesystem.
 package fat32