diff --git a/src/fileio.c b/src/fileio.c
index f22ee8e0..8ba9726c 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -1,6 +1,7 @@
 /*
  * avrdude - A Downloader/Uploader for AVR device programmers
  * Copyright (C) 2000-2004  Brian S. Dean <bsd@bsdhome.com>
+ * Copyright (C) 2023 Stefan Rueger <stefan.rueger@urclocks.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by