diff --git a/src/guake3.h b/src/guake3.h
new file mode 100644
index 0000000..b440451
--- /dev/null
+++ b/src/guake3.h
@@ -0,0 +1,21 @@
+/*
+Copyright (C) 2013-2018 Alessio Garzi <gun101@email.it>
+Copyright (C) 2013-2018 Francesco Minà <mina.francesco@gmail.com>
+
+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, write to the
+Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+* */
+
+extern int GUAKE3;