diff --git a/LICENCE b/LICENCE
index bf101e2..0ad6d5b 100644
--- a/LICENCE
+++ b/LICENCE
@@ -1,6 +1,8 @@
 /*
- * Copyright (C) 2012 by Kyle Keen <keenerd@gmail.com>
- *
+ * Copyright (C) 2012 by Kyle Keen <keenerd@gmail.com>  
+ * rtl-ais uses code from AISDecoder Copyright (C) 2013  Astra Paging Ltd / AISHub (info@aishub.net)
+ * AISDecoder uses parts of GNUAIS project (http://gnuais.sourceforge.net/)
+ * 
  * 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
@@ -13,4 +15,4 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
\ No newline at end of file
+ */