diff --git a/controllers.py b/controllers.py
index 714c4a3230..cdbe2bcb2d 100644
--- a/controllers.py
+++ b/controllers.py
@@ -10,7 +10,6 @@
 import numbers
 import cStringIO
 import datetime
-import itertools
 
 from flask import render_template, send_from_directory, make_response, request, jsonify, redirect, \
     session, url_for