diff --git a/lib/6to5/index.js b/lib/6to5/index.js
index b9f6c6604c..e76c5073c6 100644
--- a/lib/6to5/index.js
+++ b/lib/6to5/index.js
@@ -3,8 +3,6 @@ var util      = require("./util");
 var fs        = require("fs");
 var _         = require("lodash");
 
-exports.Transformer = require("./transformation/transformer");
-
 exports.types = require("./types");
 
 exports.runtime = require("./runtime-generator");