diff --git a/thesethreewords.py b/thesethreewords.py
index b3d8c2d..4f68b26 100644
--- a/thesethreewords.py
+++ b/thesethreewords.py
@@ -148,7 +148,7 @@ class WordHasher(object):
     def to_bytes(self, integer):
         """Convert a 48bit `integer` to a list of 6bytes"""
         bytes = [integer & 0b11111111]
-        for n in xrange(1,6):
+        for n in range(1,6):
             div = 2**(n*8)
             bytes.append((integer/div) & 0b11111111)