diff --git a/gooey/gui/widgets/widget_pack.py b/gooey/gui/widgets/widget_pack.py
index 37d09a3..3a8678a 100644
--- a/gooey/gui/widgets/widget_pack.py
+++ b/gooey/gui/widgets/widget_pack.py
@@ -6,6 +6,7 @@ __author__ = 'Chris'
 
 from abc import ABCMeta, abstractmethod
 
+import os
 import wx
 import wx.lib.agw.multidirdialog as MDD