diff --git a/pkgs/desktops/gnome-2.28/platform/libgnomecups/default.nix b/pkgs/desktops/gnome-2.28/platform/libgnomecups/default.nix
index ec276578cb6..0521ce9058f 100644
--- a/pkgs/desktops/gnome-2.28/platform/libgnomecups/default.nix
+++ b/pkgs/desktops/gnome-2.28/platform/libgnomecups/default.nix
@@ -1,13 +1,16 @@
 {stdenv, fetchurl, pkgconfig, gtk, gettext, libxml2, intltool, libart_lgpl }:
 
-stdenv.mkDerivation {
+let
   name = "libgnomecups-0.2.3";
-  
+in
+stdenv.mkDerivation {
+  inherit name;
+
   src = fetchurl {
-    url = mirror://gnome/sources/libgnomecups/0.2/libgnomecups-0.2.3.tar.bz2;
+    url = "mirror://gnome/sources/libgnomecups/0.2/${name}.tar.bz2";
     sha256 = "0a8xdaxzz2wc0n1fjcav65093gixzyac3948l8cxx1mk884yhc71";
   };
-  
+
   buildInputs = [ pkgconfig gtk gettext intltool libart_lgpl ];
   propagatedBuildInputs = [ libxml2 ];
 }