diff --git a/pkgs/desktops/gnome-2/platform/GConf/default.nix b/pkgs/desktops/gnome-2/platform/GConf/default.nix
index 1a1848491b16..f13ff5712427 100644
--- a/pkgs/desktops/gnome-2/platform/GConf/default.nix
+++ b/pkgs/desktops/gnome-2/platform/GConf/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, dbus-glib, glib, ORBit2, libxml2, polkit, python2, intltool }:
+{ stdenv, fetchurl, pkgconfig, dbus-glib, glib, ORBit2, libxml2, polkit, python3, intltool }:
 
 stdenv.mkDerivation rec {
   pname = "gconf";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" "man" ];
 
-  buildInputs = [ ORBit2 libxml2 python2 ]
+  buildInputs = [ ORBit2 libxml2 python3 ]
     # polkit requires pam, which requires shadow.h, which is not available on
     # darwin
     ++ stdenv.lib.optional (!stdenv.isDarwin) polkit;
@@ -24,6 +24,10 @@ stdenv.mkDerivation rec {
     # fixes the "libgconfbackend-oldxml.so is not portable" error on darwin
     stdenv.lib.optional stdenv.isDarwin [ "--enable-static" ];
 
+  postPatch = ''
+    2to3 --write --nobackup gsettings/gsettings-schema-convert
+  '';
+
   meta = with stdenv.lib; {
     homepage = https://projects.gnome.org/gconf/;
     description = "Deprecated system for storing application preferences";