diff --git a/libcloud/test/compute/test_openstack.py b/libcloud/test/compute/test_openstack.py
index e77aefb..1a9ad35 100644
--- a/libcloud/test/compute/test_openstack.py
+++ b/libcloud/test/compute/test_openstack.py
@@ -77,6 +77,9 @@
 
 class OpenStackServiceCatalogTests(unittest.TestCase):
     # TODO refactor and move into libcloud/test/common
+    def setUp(self):
+        OpenStackBaseConnection.conn_classes = (OpenStackMockHttp, OpenStackMockHttp)
+
     def test_connection_get_service_catalog(self):
         connection = OpenStackBaseConnection(*OPENSTACK_PARAMS)
         connection.conn_classes = (OpenStackMockHttp, OpenStackMockHttp)
@@ -100,6 +103,9 @@
 
 class OpenStackAuthConnectionTests(unittest.TestCase):
     # TODO refactor and move into libcloud/test/common
+    def setUp(self):
+        OpenStackBaseConnection.conn_classes = (OpenStackMockHttp, OpenStackMockHttp)
+
     def test_basic_authentication(self):
         tuples = [
            ('1.0', OpenStackMockHttp),