diff --git a/pkgs/by-name/mp/mpage/package.nix b/pkgs/by-name/mp/mpage/package.nix
index ef6cfa8e381d..3f247a65a37a 100644
--- a/pkgs/by-name/mp/mpage/package.nix
+++ b/pkgs/by-name/mp/mpage/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
       ISO 8859.1 to print 8-bit characters.
     '';
 
-    license = "liberal"; # a non-copyleft license, see `Copyright' file
+    license = lib.licenses.gpl2Plus;
     homepage = "http://www.mesa.nl/pub/mpage/";
     platforms = lib.platforms.all;
   };