diff --git a/kmodes/util/tests/test_dissim.py b/kmodes/util/tests/test_dissim.py
index 99defef..38b7ed0 100644
--- a/kmodes/util/tests/test_dissim.py
+++ b/kmodes/util/tests/test_dissim.py
@@ -122,7 +122,7 @@ def test_jaccard__binary_dissim(self):
         b = np.array([[1, 1, 1, 0, -1, 1]])
         with self.assertRaises(ValueError):
             jaccard_binary_dissim(a, b)
-        
+
         a = np.array([[np.NaN, 0, 0, 1, 1, 0]])
         b = np.array([[1, 1, 1, 0, 1, 1]])
         with self.assertRaises(ValueError):