diff --git a/combo/apps/dataviz/forms.py b/combo/apps/dataviz/forms.py
index ce6d92ae..467d6dbc 100644
--- a/combo/apps/dataviz/forms.py
+++ b/combo/apps/dataviz/forms.py
@@ -16,6 +16,7 @@
 
 from django import forms
 from django.conf import settings
+from django.utils.translation import ugettext_lazy as _
 
 from combo.utils import requests