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 2fb1e091aa0e..9663d1317622 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
@@ -43,8 +43,6 @@ stdenv.mkDerivation rec {
     echo "${unzip}/bin" > $out/${passthru.mozillaPlugin}/extra-bin-path
   '';
 
-  enableParallelBuilding = true;
-
   passthru = {
     mozillaPlugin = "/lib/mozilla/plugins";
   };