diff --git a/lib/6to5/middleware.js b/lib/6to5/middleware.js
index 72998b61c8..1f575a419b 100644
--- a/lib/6to5/middleware.js
+++ b/lib/6to5/middleware.js
@@ -6,8 +6,9 @@ var _    = require("lodash");
 
 module.exports = function (opts) {
   opts = _.defaults(opts || {}, {
-    src: "assets",
-    dest: "cache"
+    options: {},
+    dest:    "cache",
+    src:     "assets"
   });
 
   var cache = {};
@@ -31,7 +32,7 @@ module.exports = function (opts) {
     };
 
     var compile = function () {
-      var transformOpts = _.clone(opts.transform || {});
+      var transformOpts = _.clone(opts.options);
 
       api.transformFile(opts.dest, transformOpts, function (err, transformed) {
         if (err) return next(err);