diff --git a/lib/6to5/browser.js b/lib/6to5/browser.js
index aab38a962b..d8d0a5eaa9 100644
--- a/lib/6to5/browser.js
+++ b/lib/6to5/browser.js
@@ -1,6 +1,20 @@
 Error.captureStackTrace = Error.captureStackTrace || function (obj) {
-  obj.stack = [{ toString: null }];
+  if (Error.prepareStackTrace) {
+    var frame = {
+      isEval: function () { return false; },
+      getFileName: function () { return "filename"; },
+      getLineNumber: function () { return 1; },
+      getColumnNumber: function () { return 1; },
+      getFunctionName: function () { return "functionName" }
+    };
+
+    obj.stack = Error.prepareStackTrace(obj, [frame, frame, frame]);
+  } else {
+    obj.stack = obj.stack || obj.name || "Error";
+  }
 };
 
+console.log("omg hi");
+
 exports.generate  = require("./generator");
 exports.transform = require("./transform");