diff --git a/rpc/json.go b/rpc/json.go
index 85b198d12c..8c2a672e34 100644
--- a/rpc/json.go
+++ b/rpc/json.go
@@ -1,3 +1,19 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
 package rpc
 
 import (
diff --git a/rpc/message.go b/rpc/message.go
index 8aadfa6910..03e9625acd 100644
--- a/rpc/message.go
+++ b/rpc/message.go
@@ -1,3 +1,19 @@
+/*
+  This file is part of go-ethereum
+
+  go-ethereum is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  go-ethereum is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
 package rpc
 
 import (
diff --git a/rpc/packages.go b/rpc/packages.go
index 4414abf195..8a58700b28 100644
--- a/rpc/packages.go
+++ b/rpc/packages.go
@@ -1,3 +1,19 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
 /*
 
 For each request type, define the following:
diff --git a/rpc/server.go b/rpc/server.go
index 39b955dffb..56b16b649d 100644
--- a/rpc/server.go
+++ b/rpc/server.go
@@ -1,3 +1,19 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
 package rpc
 
 import (