diff --git a/bignum.c b/bignum.c
index 90978abca7..2ba8afe5e6 100644
--- a/bignum.c
+++ b/bignum.c
@@ -1,6 +1,7 @@
 /**
  * Copyright (c) 2013-2014 Tomas Dzetkulic
  * Copyright (c) 2013-2014 Pavol Rusnak
+ * Copyright (c)      2015 Jochen Hoenicke
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the "Software"),
diff --git a/ecdsa.c b/ecdsa.c
index bf44463394..8d4e8df3ef 100644
--- a/ecdsa.c
+++ b/ecdsa.c
@@ -1,6 +1,7 @@
 /**
  * Copyright (c) 2013-2014 Tomas Dzetkulic
  * Copyright (c) 2013-2014 Pavol Rusnak
+ * Copyright (c)      2015 Jochen Hoenicke
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the "Software"),