diff --git a/libavcodec/mjpegenc_common.c b/libavcodec/mjpegenc_common.c
index cf3e32ac93..8a5b99f227 100644
--- a/libavcodec/mjpegenc_common.c
+++ b/libavcodec/mjpegenc_common.c
@@ -1,5 +1,7 @@
 /*
  * lossless JPEG shared bits
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ * Copyright (c) 2003 Alex Beregszaszi
  *
  * This file is part of FFmpeg.
  *