diff --git a/apps/common/widgets.py b/apps/common/widgets.py
index 7e8db4918d..3a3aa6c459 100644
--- a/apps/common/widgets.py
+++ b/apps/common/widgets.py
@@ -1,3 +1,5 @@
+import os
+
 from django.utils.translation import ugettext_lazy as _
 from django.utils.safestring import mark_safe
 from django import forms