diff --git a/packages/rtl-unicode/src/inc/graphemebreakproperty.pp b/packages/rtl-unicode/src/inc/graphemebreakproperty.pp
index c55b76c2f1..266bfb3ad5 100644
--- a/packages/rtl-unicode/src/inc/graphemebreakproperty.pp
+++ b/packages/rtl-unicode/src/inc/graphemebreakproperty.pp
@@ -1,3 +1,33 @@
+{ GraphemeBreakProperty Unicode data unit.
+
+  Copyright (C) 2021 Nikolay Nikolov <nickysn@users.sourceforge.net>
+
+  This library is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or (at your
+  option) any later version with the following modification:
+
+  As a special exception, the copyright holders of this library give you
+  permission to link this library with independent modules to produce an
+  executable, regardless of the license terms of these independent modules,and
+  to copy and distribute the resulting executable under terms of your choice,
+  provided that you also meet, for each linked independent module, the terms
+  and conditions of the license of that module. An independent module is a
+  module which is not derived from or based on this library. If you modify
+  this library, you may extend this exception to your version of the library,
+  but you are not obligated to do so. If you do not wish to do so, delete this
+  exception statement from your 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 Library General Public License
+  for more details.
+
+  You should have received a copy of the GNU Library General Public License
+  along with this library; if not, write to the Free Software Foundation,
+  Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA.
+}
+
 unit graphemebreakproperty;
 
 {$MODE objfpc}