diff --git a/COPYING b/COPYING
--- a/COPYING
+++ b/COPYING
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2009-2021 The Bitcoin Developers
+Copyright (c) 2009-2021 The Bitcoin developers
 Copyright (c) 2009-2017 The Bitcoin Core developers
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
diff --git a/contrib/debian/copyright b/contrib/debian/copyright
--- a/contrib/debian/copyright
+++ b/contrib/debian/copyright
@@ -4,11 +4,11 @@
 Source: https://github.com/Bitcoin-ABC/bitcoin-abc
 
 Files: *
-Copyright: 2009-2017, The Bitcoin Core Developers, 2017-2019 The Bitcoin Developers
+Copyright: 2009-2017, The Bitcoin Core developers, 2017-2019 The Bitcoin developers
 License: Expat
-Comment: The Bitcoin Developers encompasses those contributing to Bitcoin
+Comment: The Bitcoin developers encompasses those contributing to Bitcoin
          client open source development (various clients).
-         The Bitcoin Core Developers encompasses the current developers
+         The Bitcoin Core developers encompasses the current developers
          listed on bitcoin.org, as well as the numerous contributors to
          the project.
 
diff --git a/src/currencyunit.h b/src/currencyunit.h
--- a/src/currencyunit.h
+++ b/src/currencyunit.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2021 The Bitcoin Developers
+// Copyright (c) 2021 The Bitcoin 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/currencyunit.cpp b/src/currencyunit.cpp
--- a/src/currencyunit.cpp
+++ b/src/currencyunit.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2021 The Bitcoin Developers
+// Copyright (c) 2021 The Bitcoin 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/qt/test/bitcoinaddressvalidatortests.h b/src/qt/test/bitcoinaddressvalidatortests.h
--- a/src/qt/test/bitcoinaddressvalidatortests.h
+++ b/src/qt/test/bitcoinaddressvalidatortests.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2017 The Bitcoin Developers
+// Copyright (c) 2017 The Bitcoin 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/qt/test/bitcoinaddressvalidatortests.cpp b/src/qt/test/bitcoinaddressvalidatortests.cpp
--- a/src/qt/test/bitcoinaddressvalidatortests.cpp
+++ b/src/qt/test/bitcoinaddressvalidatortests.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2017 The Bitcoin Developers
+// Copyright (c) 2017 The Bitcoin 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/script/scriptcache.h b/src/script/scriptcache.h
--- a/src/script/scriptcache.h
+++ b/src/script/scriptcache.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2017 - The Bitcoin Developers
+// Copyright (c) 2017 The Bitcoin 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/test/sigcache_tests.cpp b/src/test/sigcache_tests.cpp
--- a/src/test/sigcache_tests.cpp
+++ b/src/test/sigcache_tests.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2012-2015 The Bitcoin Core developers
-// Copyright (c) 2019- The Bitcoin developers
+// Copyright (c) 2019 The Bitcoin developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 // (based on key_tests.cpp)