diff --git a/ceilometer/objectstore/swift.py b/ceilometer/objectstore/swift.py
index fbee19ec3..0dc6e8fa3 100644
--- a/ceilometer/objectstore/swift.py
+++ b/ceilometer/objectstore/swift.py
@@ -31,6 +31,8 @@ from ceilometer.openstack.common import log
 from ceilometer.openstack.common import timeutils
 from ceilometer import plugin
 
+from urlparse import urljoin
+
 
 LOG = log.getLogger(__name__)
 
@@ -110,7 +112,19 @@ class SwiftPollster(_Base):
             LOG.debug(_("Swift endpoint not found"))
             return
 
-        base_url = '%s/v1/%s' % (endpoint, cfg.CONF.reseller_prefix)
         for t in ksclient.tenants.list():
-            yield (t.id, swift.head_account('%s%s' % (base_url, t.id),
+            yield (t.id, swift.head_account(SwiftPollster.
+                                            _neaten_url(endpoint, t.id),
                                             ksclient.auth_token))
+
+    # Transform the registered url to standard and valid format.
+    @staticmethod
+    def _neaten_url(endpoint, tenant_id):
+
+        path = 'v1/' + cfg.CONF.reseller_prefix + tenant_id
+
+        # remove the tail '/' of the endpoint.
+        if endpoint.endswith('/'):
+            endpoint = endpoint[:-1]
+
+        return urljoin(endpoint, path)
diff --git a/tests/objectstore/test_swift.py b/tests/objectstore/test_swift.py
index 3f519b8d0..7fc2b950d 100644
--- a/tests/objectstore/test_swift.py
+++ b/tests/objectstore/test_swift.py
@@ -59,6 +59,21 @@ class TestSwiftPollster(base.TestCase):
         self.pollster = swift.SwiftPollster()
         self.manager = TestManager()
 
+    def test_objectstore_neaten_url(self):
+        test_endpoint = 'http://127.0.0.1:8080'
+        test_tenant_id = 'a7fd1695fa154486a647e44aa99a1b9b'
+        standard_url = test_endpoint + '/v1/' + 'AUTH_' + test_tenant_id
+
+        self.assertEqual(standard_url,
+                         self.pollster._neaten_url(test_endpoint,
+                                                   test_tenant_id))
+        self.assertEqual(standard_url,
+                         self.pollster._neaten_url(test_endpoint + '/',
+                                                   test_tenant_id))
+        self.assertEqual(standard_url,
+                         self.pollster._neaten_url(test_endpoint + '/v1',
+                                                   test_tenant_id))
+
     def test_objectstore_metering(self):
         self.stubs.Set(swift.SwiftPollster, 'iter_accounts',
                        self.fake_iter_accounts)