diff --git a/libavcodec/fastaudio.c b/libavcodec/fastaudio.c
index e50678cd3d..9de42d2134 100644
--- a/libavcodec/fastaudio.c
+++ b/libavcodec/fastaudio.c
@@ -1,5 +1,7 @@
 /*
  * MOFLEX Fast Audio decoder
+ * Copyright (c) 2015-2016 Florian Nouwt
+ * Copyright (c) 2017 Adib Surani
  * Copyright (c) 2020 Paul B Mahol
  *
  * This file is part of FFmpeg.
diff --git a/libavcodec/mobiclip.c b/libavcodec/mobiclip.c
index 9392ab947e..bf47a5bc41 100644
--- a/libavcodec/mobiclip.c
+++ b/libavcodec/mobiclip.c
@@ -1,5 +1,6 @@
 /*
  * MobiClip Video decoder
+ * Copyright (c) 2015-2016 Florian Nouwt
  * Copyright (c) 2017 Adib Surani
  * Copyright (c) 2020 Paul B Mahol
  *
diff --git a/libavformat/mods.c b/libavformat/mods.c
index 4f093cdf0c..a26db87e6c 100644
--- a/libavformat/mods.c
+++ b/libavformat/mods.c
@@ -1,5 +1,7 @@
 /*
  * MODS demuxer
+ * Copyright (c) 2015-2016 Florian Nouwt
+ * Copyright (c) 2017 Adib Surani
  * Copyright (c) 2020 Paul B Mahol
  *
  * This file is part of FFmpeg.
diff --git a/libavformat/moflex.c b/libavformat/moflex.c
index 8142925adc..41335ada78 100644
--- a/libavformat/moflex.c
+++ b/libavformat/moflex.c
@@ -1,5 +1,7 @@
 /*
  * MOFLEX demuxer
+ * Copyright (c) 2015-2016 Florian Nouwt
+ * Copyright (c) 2017 Adib Surani
  * Copyright (c) 2020 Paul B Mahol
  *
  * This file is part of FFmpeg.