diff --git a/tobiko/openstack/keystone/_client.py b/tobiko/openstack/keystone/_client.py
index 203c2fcd3..db726d9d0 100644
--- a/tobiko/openstack/keystone/_client.py
+++ b/tobiko/openstack/keystone/_client.py
@@ -33,7 +33,13 @@ LOG = log.getLogger(__name__)
 class KeystoneClientFixture(_client.OpenstackClientFixture):
 
     def init_client(self, session):
-        return keystoneclient.Client(session=session)
+        from tobiko import config
+        if config.CONF.tobiko.keystone.interface is None:
+            return keystoneclient.Client(session=session)
+        else:
+            return keystoneclient.Client(
+                session=session,
+                interface=config.CONF.tobiko.keystone.interface)
 
 
 class KeystoneClientManager(_client.OpenstackClientManager):
diff --git a/tobiko/openstack/keystone/config.py b/tobiko/openstack/keystone/config.py
index 8945ef057..5118b39fb 100644
--- a/tobiko/openstack/keystone/config.py
+++ b/tobiko/openstack/keystone/config.py
@@ -62,7 +62,10 @@ OPTIONS = [
                 help="Directories where to look for clouds files"),
     cfg.ListOpt('clouds_file_names',
                 default=['clouds.yaml', 'clouds.yml', 'clouds.json'],
-                help="Clouds file names")]
+                help="Clouds file names"),
+    cfg.StrOpt('interface',
+               default=None,
+               help="default value in case keystone interface is needed")]
 
 
 def register_tobiko_options(conf):