diff --git a/lib/6to5/transformation/file.js b/lib/6to5/transformation/file.js
index 87d6775459..7fe68801e1 100644
--- a/lib/6to5/transformation/file.js
+++ b/lib/6to5/transformation/file.js
@@ -178,8 +178,8 @@ File.prototype.normalizeOptions = function (opts) {
 
   var ensureEnabled = function (key) {
     var namespace = transform.transformerNamespaces[key];
+    if (namespace === "es7") opts.experimental = true;
     if (namespace === "playground") opts.playground = true;
-    if (namespace === "experimental") opts.experimental = true;
   };
 
   each(opts.whitelist, ensureEnabled);