diff --git a/src/pow/nano.cpp b/src/pow/nano.cpp
index 0a04e2f..9c17a91 100644
--- a/src/pow/nano.cpp
+++ b/src/pow/nano.cpp
@@ -1,5 +1,3 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2014 The Bitcoin Core developers
 // Copyright (c) 2017-2018 The Bitcoin Nano developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
diff --git a/src/pow/nano.h b/src/pow/nano.h
index 109866e..5e38add 100644
--- a/src/pow/nano.h
+++ b/src/pow/nano.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2018 The Bitcoin Nano developers                                                                                                                                                                                                                        
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BTCNANO_NANO_H
 #define BTCNANO_NANO_H