diff --git a/hd44780/hd44780bustestrecording_test.go b/hd44780/hd44780bustestrecording_test.go
index 0b51eea..394765d 100644
--- a/hd44780/hd44780bustestrecording_test.go
+++ b/hd44780/hd44780bustestrecording_test.go
@@ -1,3 +1,7 @@
+// Copyright 2025 The Periph Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+
 package hd44780
 
 import (