diff --git a/libavcodec/g729.h b/libavcodec/g729.h
index 462cf8f1ac..61683130a9 100644
--- a/libavcodec/g729.h
+++ b/libavcodec/g729.h
@@ -1,5 +1,5 @@
 /*
- * G.729 decoder
+ * G.729, G729 Annex D decoders
  * Copyright (c) 2008 Vladimir Voroshilov
  *
  * This file is part of FFmpeg.
diff --git a/libavcodec/g729data.h b/libavcodec/g729data.h
index 2509c3928a..365ca47ec6 100644
--- a/libavcodec/g729data.h
+++ b/libavcodec/g729data.h
@@ -1,5 +1,5 @@
 /*
- * data for G.729 decoder
+ * data for G.729, G729 Annex D decoders
  * Copyright (c) 2007 Vladimir Voroshilov
  *
  * This file is part of FFmpeg.
diff --git a/libavcodec/g729dec.c b/libavcodec/g729dec.c
index e977e53954..20276f2a7e 100644
--- a/libavcodec/g729dec.c
+++ b/libavcodec/g729dec.c
@@ -1,5 +1,5 @@
 /*
- * G.729 decoder
+ * G.729, G729 Annex D decoders
  * Copyright (c) 2008 Vladimir Voroshilov
  *
  * This file is part of FFmpeg.