diff --git a/svgpathtools/smoothing.py b/svgpathtools/smoothing.py
index 424ed99..3bd7015 100644
--- a/svgpathtools/smoothing.py
+++ b/svgpathtools/smoothing.py
@@ -23,7 +23,7 @@ def is_differentiable(path, tol=1e-8):
 def kinks(path, tol=1e-8):
     """returns indices of segments that start on a non-differentiable joint."""
     kink_list = []
-    for idx in xrange(len(path)):
+    for idx in range(len(path)):
         if idx == 0 and not path.isclosed():
             continue
         try: