diff --git a/lib/6to5/transformation/transformer-pass.js b/lib/6to5/transformation/transformer-pass.js
index a4a030bfc2..9ad470ecf0 100644
--- a/lib/6to5/transformation/transformer-pass.js
+++ b/lib/6to5/transformation/transformer-pass.js
@@ -29,7 +29,7 @@ TransformerPass.prototype.canRun = function () {
 
   // whitelist
   var whitelist = opts.whitelist;
-  if (whitelist.length && !contains(whitelist, key)) return false;
+  if (whitelist.length) return contains(whitelist, key);
 
   // optional
   if (transformer.optional && !contains(opts.optional, key)) return false;