diff --git a/bindings.js b/bindings.js
index 226b37f..67df040 100644
--- a/bindings.js
+++ b/bindings.js
@@ -155,7 +155,7 @@ exports.getFileName = function getFileName(calling_file) {
   Error.prepareStackTrace = function(e, st) {
     for (var i = 0, l = st.length; i < l; i++) {
       fileName = st[i].getFileName();
-      if (fileName !== __filename) {
+      if (fileName && fileName !== __filename) {
         if (calling_file) {
           if (fileName !== calling_file) {
             return;