diff --git a/libavcodec/proresenc_kostya.c b/libavcodec/proresenc_kostya.c
index d29faa0fe3..c32b734d53 100644
--- a/libavcodec/proresenc_kostya.c
+++ b/libavcodec/proresenc_kostya.c
@@ -1,6 +1,7 @@
 /*
  * Apple ProRes encoder
  *
+ * Copyright (c) 2011 Anatoliy Wasserman
  * Copyright (c) 2012 Konstantin Shishkov
  *
  * This encoder appears to be based on Anatoliy Wassermans considering