diff --git a/server/streamreader/process.hpp b/server/streamreader/process.hpp
index c2e39af4..563b240f 100644
--- a/server/streamreader/process.hpp
+++ b/server/streamreader/process.hpp
@@ -1,3 +1,18 @@
+/***
+    This file is part of snapcast
+    Copyright (C) 2014-2017  Johannes Pohl
+    This program 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.
+    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+***/
+
 #ifndef TINY_PROCESS_LIBRARY_HPP_
 #define TINY_PROCESS_LIBRARY_HPP_