diff --git a/src/libImaging/BcnEncode.c b/src/libImaging/BcnEncode.c
index 8dd381abc..14065e976 100644
--- a/src/libImaging/BcnEncode.c
+++ b/src/libImaging/BcnEncode.c
@@ -1,14 +1,15 @@
 /*
- * The Python Imaging Library
+ * The Python Imaging Library.
+ * $Id$
  *
- * encoder for DXTn-compressed data
+ * decoder for packed bitfields (converts to floating point)
  *
- * Format documentation:
- *   https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
+ * history:
+ * 22-08-11 Initial implementation
  *
- * The contents of this file are in the public domain (CC0)
- * Full text of the CC0 license:
- *   https://creativecommons.org/publicdomain/zero/1.0/
+ * Copyright (c) REDxEYE 2022.
+ *
+ * See the README file for information on usage and redistribution.
  */
 
 #include "Imaging.h"