diff --git a/core/src/core/block.rs b/core/src/core/block.rs
index b7826ac13..9be84eb81 100644
--- a/core/src/core/block.rs
+++ b/core/src/core/block.rs
@@ -1,4 +1,4 @@
-// Copyright 2016 The Developers
+// Copyright 2016 The Grin Developers
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/src/core/hash.rs b/core/src/core/hash.rs
index 8ae400c61..bf7940ea7 100644
--- a/core/src/core/hash.rs
+++ b/core/src/core/hash.rs
@@ -1,4 +1,4 @@
-// Copyright 2016 The Developers
+// Copyright 2016 The Grin Developers
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/src/core/transaction.rs b/core/src/core/transaction.rs
index 91852e165..368d7a5d7 100644
--- a/core/src/core/transaction.rs
+++ b/core/src/core/transaction.rs
@@ -1,4 +1,4 @@
-// Copyright 2016 The Developers
+// Copyright 2016 The Grin Developers
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.