diff --git a/kmodes/util/dissim.py b/kmodes/util/dissim.py
index 944c013..f0621c6 100644
--- a/kmodes/util/dissim.py
+++ b/kmodes/util/dissim.py
@@ -60,9 +60,9 @@ def calc_dissim(b, X, memj, idr):
 
 def jaccard_dissim(a, b, **_):
     """Jaccard distance function"""
-    i = np.sum((a == 1) & (b == 1), axis=1)  
+    i = np.sum((a == 1) & (b == 1), axis=1)
     j = np.sum((a == 1) | (b == 1), axis=1)
     if j.any != 0:
-        return ((j - i) /j)
+        return (( j - i ) / j )
     else:
         return 1