diff --git a/lib/src/dialog.js b/lib/src/dialog.js
index 2015ced7..ff6923cf 100644
--- a/lib/src/dialog.js
+++ b/lib/src/dialog.js
@@ -82,6 +82,7 @@ exports.selectImage = function() {
  * dialog.showError(new Error('Foo Bar'));
  */
 exports.showError = function(error) {
-  electron.dialog.showErrorBox(error.message, error.stack || '');
+  error = error || {};
+  electron.dialog.showErrorBox(error.message || 'An error ocurred!', error.stack || '');
   throw error;
 };