diff --git a/pkgs/desktops/gnome-3/3.12/core/gnome-shell/default.nix b/pkgs/desktops/gnome-3/3.12/core/gnome-shell/default.nix
index 49514b3dbe4..50250c75aa7 100644
--- a/pkgs/desktops/gnome-3/3.12/core/gnome-shell/default.nix
+++ b/pkgs/desktops/gnome-3/3.12/core/gnome-shell/default.nix
@@ -41,6 +41,9 @@ stdenv.mkDerivation rec {
       --prefix XDG_DATA_DIRS : "${evolution_data_server}/share:$out/share:$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH"
   '';
 
+
+  enableParallelBuilding = true;
+
   meta = with stdenv.lib; {
     platforms = platforms.linux;
   };