diff --git a/lib/6to5/util.js b/lib/6to5/util.js
index d79d53d6b2..94689c8bfe 100644
--- a/lib/6to5/util.js
+++ b/lib/6to5/util.js
@@ -275,7 +275,7 @@ exports.parse = function (opts, code, callback) {
         message += frame;
       }
 
-      err.stack = err.stack.replace(err.message, message);
+      err.stack   = err.stack.replace(err.message, message);
       err.message = message;
     }