diff --git a/alib2/src/std/addr2line.cpp b/alib2/src/std/addr2line.cpp
index 40eed22ff26f12b6a16ab705b0b0b3e553b8b14b..ede5bdcdc9bcd4ec1d3da6d0059a211bbfd984f3 100644
--- a/alib2/src/std/addr2line.cpp
+++ b/alib2/src/std/addr2line.cpp
@@ -20,14 +20,8 @@
  * MA 02110-1301, USA. */
 
 /* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de
- *
- * Usage:
- * addr2line [options] addr addr ...
- * or
- * addr2line [options]
- *
- * both forms write results to stdout, the second form reads addresses
- * to be converted from stdin. */
+ * modified for purposes of stacktrace generation by
+ * jan.travnicek@fit.cvut.cz */
 
 #include "addr2line.h"
 #include <bfd.h>
diff --git a/alib2/src/std/addr2line.h b/alib2/src/std/addr2line.h
index 4ae5af8694e6ef506e9dbc26edb58df97bbe30d9..878d857163ed4868963fbe651c21c3afe93dce78 100644
--- a/alib2/src/std/addr2line.h
+++ b/alib2/src/std/addr2line.h
@@ -1,34 +1,3 @@
-/* addr2line.c -- convert addresses to line number and function name
- * Copyright (C) 1997-2014 Free Software Foundation, Inc.
- * Contributed by Ulrich Lauther <Ulrich.Lauther@mchp.siemens.de>
- *
- * This file is part of GNU Binutils.
- *
- * 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, 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, 51 Franklin Street - Fifth Floor, Boston,
- * MA 02110-1301, USA. */
-
-/* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de
- *
- * Usage:
- * addr2line [options] addr addr ...
- * or
- * addr2line [options]
- *
- * both forms write results to stdout, the second form reads addresses
- * to be converted from stdin. */
-
 #include <string>
 
 /* Process a file. Returns an exit value for main(). */