diff --git a/keystoneclient/middleware/s3_token.py b/keystoneclient/middleware/s3_token.py
index 546fd6aab..72a82e93e 100644
--- a/keystoneclient/middleware/s3_token.py
+++ b/keystoneclient/middleware/s3_token.py
@@ -34,11 +34,11 @@ This WSGI component:
 """
 
 import logging
-import urllib
 import webob
 
 import requests
 import six
+from six.moves import urllib
 
 from keystoneclient.openstack.common import jsonutils
 
@@ -78,7 +78,7 @@ def split_path(path, minsegs=1, maxsegs=None, rest_with_last=False):
         count = len(segs)
         if (segs[0] or count < minsegs or count > maxsegs or
                 '' in segs[1:minsegs]):
-            raise ValueError('Invalid path: %s' % urllib.quote(path))
+            raise ValueError('Invalid path: %s' % urllib.parse.quote(path))
     else:
         minsegs += 1
         maxsegs += 1
@@ -87,7 +87,7 @@ def split_path(path, minsegs=1, maxsegs=None, rest_with_last=False):
         if (segs[0] or count < minsegs or count > maxsegs + 1 or
                 '' in segs[1:minsegs] or
                 (count == maxsegs + 1 and segs[maxsegs])):
-            raise ValueError('Invalid path: %s' % urllib.quote(path))
+            raise ValueError('Invalid path: %s' % urllib.parse.quote(path))
     segs = segs[1:maxsegs]
     segs.extend([None] * (maxsegs - 1 - len(segs)))
     return segs