diff --git a/metadata/service/control/single.yml b/metadata/service/control/single.yml
index 73ce29b..ea8472a 100644
--- a/metadata/service/control/single.yml
+++ b/metadata/service/control/single.yml
@@ -17,6 +17,7 @@
       version: ${_param:opencontrail_version}
       identity:
         engine: keystone
+        protocol: ${_param:opencontrail_identity_protocol}
         host: ${_param:single_address}
         port: ${_param:opencontrail_identity_port}
         token: '${_param:keystone_service_token}'
@@ -57,6 +58,7 @@
         engine: keystone
         version: ${_param:opencontrail_identity_version}
         region: ${_param:openstack_region}
+        protocol: ${_param:opencontrail_identity_protocol}
         host: ${_param:single_address}
         port: ${_param:opencontrail_identity_port}
         user: ${_param:opencontrail_admin_user}
@@ -103,6 +105,7 @@
         engine: keystone
         version: ${_param:opencontrail_identity_version}
         region: RegionOne
+        protocol: ${_param:opencontrail_identity_protocol}
         host: ${_param:single_address}
         port: ${_param:opencontrail_identity_port}
         user: ${_param:opencontrail_admin_user}