diff --git a/ceilometer/tests/api/v2/test_list_meters_scenarios.py b/ceilometer/tests/api/v2/test_list_meters_scenarios.py
index 20018ecac..7a50da103 100644
--- a/ceilometer/tests/api/v2/test_list_meters_scenarios.py
+++ b/ceilometer/tests/api/v2/test_list_meters_scenarios.py
@@ -216,7 +216,7 @@ class TestListMeters(FunctionalTest,
         expected_error_message = ('Unknown argument: "non_valid_field_name"'
                                   ': unrecognized field in query: '
                                   '[<Query u\'non_valid_field_name\' '
-                                  'gt u\'3\' None>]')
+                                  'gt u\'3\' ')
         self.assertEqual(400, resp.status_code)
         self.assertTrue(fault_string.startswith(expected_error_message))
 
@@ -231,7 +231,7 @@ class TestListMeters(FunctionalTest,
         expected_error_message = ('Unknown argument: "non_valid_field_name"'
                                   ': unrecognized field in query: '
                                   '[<Query u\'non_valid_field_name\' '
-                                  'eq u\'3\' None>]')
+                                  'eq u\'3\' ')
         self.assertEqual(400, resp.status_code)
         self.assertTrue(fault_string.startswith(expected_error_message))