diff --git a/COPYING-note.txt b/COPYING-note.txt
new file mode 100644
index 0000000..305cb8f
--- /dev/null
+++ b/COPYING-note.txt
@@ -0,0 +1,19 @@
+Version 1.50 of os-prober contains a license clarification, the
+license of the package is GPL-2+, see for example the following commits:
+
+http://anonscm.debian.org/gitweb/?p=d-i/os-prober.git;a=commitdiff;h=249d0814ae9c6e308baaaad4ec4e0a403a592ffd
+http://anonscm.debian.org/gitweb/?p=d-i/os-prober.git;a=commit;h=25024daeccd86cec17353455b99af677b3b83b16
+http://anonscm.debian.org/gitweb/?p=d-i/os-prober.git;a=commit;h=cc0ce8e5ec252b10127ca3ebb71c12cd31d4ebc4
+
+The copyright file reads as of 2011-12-19:
+
+The majority of code in os-prober is Copyright 2004-2011 by Joshua
+Kwan, Joey Hess, Christian Perrier, Colin Watson and Otavio Salvador.
+This is licensed under the terms of the GNU GPL, either version 2 or,
+at your option, any later version.
+
+Some portions of os-prober by other contributors has an unclear license
+of "GNU GPL", with the version not specified.
+
+On Debian systems, a copy of the GNU General Public License is available in
+/usr/share/common-licenses/GPL.
diff --git a/os-prober.changes b/os-prober.changes
index 95a706d..a346cea 100644
--- a/os-prober.changes
+++ b/os-prober.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Dec 19 11:13:44 UTC 2011 - aj@suse.de
+
+- Clarify license.
+
 -------------------------------------------------------------------
 Thu Dec  8 12:23:12 UTC 2011 - aj@suse.de
 
diff --git a/os-prober.spec b/os-prober.spec
index 77c608c..454c600 100644
--- a/os-prober.spec
+++ b/os-prober.spec
@@ -26,6 +26,7 @@ Group:          System/Boot
 
 Url:            http://kitenet.net/~joey/code/os-prober/
 Source0:        http://ftp.de.debian.org/debian/pool/main/o/os-prober/%{name}_%{version}.tar.gz
+Source1:        COPYING-note.txt
 # move newns binary outside of os-prober subdirectory, so that debuginfo
 # can be automatically generated for it
 Patch0:         os-prober-newnsdirfix.patch
@@ -48,6 +49,7 @@ distributions can be added easily.
 
 %prep
 %setup -q -n %{name}
+cp %SOURCE1 .
 %patch0 -p1
 %patch1 -p1
 
@@ -90,7 +92,7 @@ fi
 
 %files
 %defattr(-,root,root,-)
-%doc README TODO debian/copyright debian/changelog
+%doc README TODO debian/copyright debian/changelog COPYING-note.txt
 %{_bindir}/*
 %{_libexecdir}/linux-boot-probes
 %{_libexecdir}/newns