diff --git a/pkgs/applications/science/astronomy/xearth/default.nix b/pkgs/applications/science/astronomy/xearth/default.nix
index 5f276a1b3c70..fef4ca1907fd 100644
--- a/pkgs/applications/science/astronomy/xearth/default.nix
+++ b/pkgs/applications/science/astronomy/xearth/default.nix
@@ -1,21 +1,20 @@
-{ stdenv, fetchurl, xorg }:
+{ stdenv, fetchurl, imake, gccmakedep, libXt, libXext }:
+
 stdenv.mkDerivation rec {
   name = "xearth-${version}";
   version = "1.1";
-  
+
   src = fetchurl {
     url = "http://xearth.org/${name}.tar.gz";
     sha256 = "bcb1407cc35b3f6dd3606b2c6072273b6a912cbd9ed1ae22fb2d26694541309c";
   };
 
-  buildInputs = with xorg; [  imake libXt libXext ];
-
-  dontAddPrefix = true;
-  configureScript="xmkmf";
+  nativeBuildInputs = [ imake gccmakedep ];
+  buildInputs = [ libXt libXext ];
 
   installFlags=[ "DESTDIR=$(out)/" "BINDIR=bin" "MANDIR=man/man1"];
   installTargets="install install.man";
-  
+
   meta = with stdenv.lib; {
     description = "sets the X root window to an image of the Earth";
     homepage = "http://xplanet.org";