diff --git a/distributions/debian/copyright b/distributions/debian/copyright
index 782656ab..a34612a0 100644
--- a/distributions/debian/copyright
+++ b/distributions/debian/copyright
@@ -1,3 +1,31 @@
-GNU General Public License version 2.0 (GPLv2)
-Files: src/*
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: Jamulus
+Upstream-Contact: Volker Fischer 
+Source: https://github.com/corrados/jamulus/
+
+Files: *
+Copyright: 2004-2020 Volker Fischer 
 License: GPL-2
+
+Files: debian/*
+Copyright:
+ 2020 Olivier Humbert <trebmuh@tuxfamily.org>
+ 2019 "Marc Landolt jr" <debian@marclandolt.ch>
+License: GPL-2
+
+License: GPL-2
+ This package 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 package 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.
+Comment:
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>
+ .
+ On Debian systems, the complete text of the GNU General
+ Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".