diff --git a/debian/copyright b/debian/copyright
index ef2688b..208c825 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -127,7 +127,7 @@
 Files: src/filter/glitch0r/*
  src/filter/rgbsplit0r/*
 Copyright: 2016, IDENT Software ~ http://identsoft.org
-License: GPL-2
+License: GPL-2+
 
 # single filters (alphabetically sorted)
 Files: src/filter/3dflippo/*