diff --git a/tests.py b/tests.py
index b856bcd..fbe5b7b 100644
--- a/tests.py
+++ b/tests.py
@@ -1,4 +1,5 @@
 import base64
+import itertools
 import logging
 import os
 import socket
@@ -71,10 +72,9 @@ class TCPStatsdMetricCollectionTests(testing.AsyncHTTPTestCase):
         path = ('foo', 'bar')
         value = 500
         metric_type = 'c'
-        expected = "{}:{}|{}\n".format(
-                    '.'.join((self.namespace, 'counters', *path)),
-                    value,
-                    metric_type)
+        expected = "{}:{}|{}\n".format('.'.join(itertools.chain((self.namespace, 'counters'), path)),
+                                        value,
+                                        metric_type)
 
         self.application.statsd.send(path, value, metric_type)
         mock_sock.assert_called_once_with(expected.encode())
@@ -84,10 +84,9 @@ class TCPStatsdMetricCollectionTests(testing.AsyncHTTPTestCase):
         path = ('foo', 'bar')
         value = 500
         metric_type = 'ms'
-        expected = "{}:{}|{}\n".format(
-                    '.'.join((self.namespace, 'timers', *path)),
-                    value,
-                    metric_type)
+        expected = "{}:{}|{}\n".format('.'.join(itertools.chain((self.namespace, 'timers'), path)),
+                                        value,
+                                        metric_type)
 
         self.application.statsd.send(path, value, metric_type)
         mock_sock.assert_called_once_with(expected.encode())
@@ -213,10 +212,9 @@ class UDPStatsdMetricCollectionTests(testing.AsyncHTTPTestCase):
         path = ('foo', 'bar')
         value = 500
         metric_type = 'c'
-        expected = "{}:{}|{}".format(
-                    '.'.join((self.namespace, 'counters', *path)),
-                    value,
-                    metric_type)
+        expected = "{}:{}|{}".format('.'.join(itertools.chain((self.namespace, 'counters'), path)),
+                                        value,
+                                        metric_type)
 
         self.application.statsd.send(path, value, metric_type)
         mock_sock.assert_called_once_with(
@@ -228,10 +226,9 @@ class UDPStatsdMetricCollectionTests(testing.AsyncHTTPTestCase):
         path = ('foo', 'bar')
         value = 500
         metric_type = 'ms'
-        expected = "{}:{}|{}".format(
-                    '.'.join((self.namespace, 'timers', *path)),
-                    value,
-                    metric_type)
+        expected = "{}:{}|{}".format('.'.join(itertools.chain((self.namespace, 'timers'), path)),
+                                        value,
+                                        metric_type)
 
         self.application.statsd.send(path, value, metric_type)
         mock_sock.assert_called_once_with(