diff --git a/source/code/BlockGameSdl.inc b/source/code/BlockGameSdl.inc
index c593215..54cc86b 100644
--- a/source/code/BlockGameSdl.inc
+++ b/source/code/BlockGameSdl.inc
@@ -1,3 +1,25 @@
+/*
+===========================================================================
+blockattack - Block Attack - Rise of the Blocks
+Copyright (C) 2005-2016 Poul Sander
+
+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 2 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/
+
+Source information and contacts persons can be found at
+http://www.blockattack.net
+===========================================================================
+*/
 
 class BlockGameSdl : public BlockGame {
 public: