diff --git a/config.js b/config.js
index 5bd8c83..a774309 100644
--- a/config.js
+++ b/config.js
@@ -1,12 +1,5 @@
 System.config({
   defaultJSExtensions: true,
-  transpiler: "babel",
-  babelOptions: {
-    "optional": [
-      "runtime",
-      "optimisation.modules.system"
-    ]
-  },
   paths: {
     "github:*": "jspm_packages/github/*",
     "npm:*": "jspm_packages/npm/*"