diff --git a/libavcodec/ra144.c b/libavcodec/ra144.c
index 3625b26f9d..a7164fdd28 100644
--- a/libavcodec/ra144.c
+++ b/libavcodec/ra144.c
@@ -1,6 +1,9 @@
 /*
  * Real Audio 1.0 (14.4K)
- * Copyright (c) 2003 the ffmpeg project
+ *
+ * Copyright (c) 2008 Vitor Sessak
+ * Copyright (c) 2003 Nick Kurshev
+ *     Based on public domain decoder at http://www.honeypot.net/audio
  *
  * This file is part of FFmpeg.
  *