diff --git a/pints/tests/test_nested_multinest.py b/pints/tests/test_nested_multinest.py
index 8723e1e45..a710a4730 100644
--- a/pints/tests/test_nested_multinest.py
+++ b/pints/tests/test_nested_multinest.py
@@ -6,6 +6,7 @@
 # released under the BSD 3-clause license. See accompanying LICENSE.md for
 # copyright notice and full license details.
 #
+from __future__ import division
 import unittest
 import numpy as np