diff --git a/ceilometer/server/telemetry/single.yml b/ceilometer/server/telemetry/single.yml
index 2d8828c..8dfb277 100644
--- a/ceilometer/server/telemetry/single.yml
+++ b/ceilometer/server/telemetry/single.yml
@@ -4,3 +4,5 @@
   ceilometer:
     server:
       role: ${_param:openstack_node_role}
+      identity:
+        protocol: ${_param:internal_protocol}