diff --git a/pkgs/development/tools/compass/default.nix b/pkgs/development/tools/compass/default.nix
index 9b21ec48c1c..f96d3e810ca 100644
--- a/pkgs/development/tools/compass/default.nix
+++ b/pkgs/development/tools/compass/default.nix
@@ -4,9 +4,7 @@ bundlerEnv {
   name = "compass-1.0.3";
 
   inherit ruby;
-  gemfile = ./Gemfile;
-  lockfile = ./Gemfile.lock;
-  gemset = ./gemset.nix;
+  gemdir = ./.;
 
   meta = with lib; {
     description = "Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain";