diff --git a/os_testr/regex_builder.py b/os_testr/regex_builder.py
index acba769..ec29334 100644
--- a/os_testr/regex_builder.py
+++ b/os_testr/regex_builder.py
@@ -20,7 +20,7 @@ import subprocess
 def _get_test_list(regex, env=None):
     env = env or copy.deepcopy(os.environ)
     proc = subprocess.Popen(['testr', 'list-tests', regex], env=env,
-                            stdout=subprocess.PIPE)
+                            stdout=subprocess.PIPE, universal_newlines=True)
     out = proc.communicate()[0]
     raw_test_list = out.split('\n')
     bad = False
diff --git a/os_testr/tests/test_regex_builder.py b/os_testr/tests/test_regex_builder.py
index e284036..04a9748 100644
--- a/os_testr/tests/test_regex_builder.py
+++ b/os_testr/tests/test_regex_builder.py
@@ -168,3 +168,9 @@ regex_b"""
 
             expected_regex = 'regex_a|regex_b'
             self.assertEqual(result, expected_regex)
+
+
+class TestGetTestList(base.TestCase):
+    def test__get_test_list(self):
+        test_list = os_testr._get_test_list('test__get_test_list')
+        self.assertIn('test__get_test_list', test_list[0])