diff --git a/pygsp/filters/filter.py b/pygsp/filters/filter.py
index <HASH>..<HASH> 100644
--- a/pygsp/filters/filter.py
+++ b/pygsp/filters/filter.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import division
+
 from math import log
 from copy import deepcopy
filters: float division for python 2