diff --git a/keystone/meta/telegraf.yml b/keystone/meta/telegraf.yml
index 1ca8655..476703e 100644
--- a/keystone/meta/telegraf.yml
+++ b/keystone/meta/telegraf.yml
@@ -31,7 +31,7 @@
   input:
     http_response:
       keystone-public-api:
-        address: "{{ server.bind.public_protocol }}://{{ server.bind.address|replace('0.0.0.0', '127.0.0.1') }}:{{ server.bind.public_port }}/"
+        address: "{{ server.bind.get('protocol','http') }}://{{ server.bind.address|replace('0.0.0.0', '127.0.0.1') }}:{{ server.bind.public_port }}/"
         expected_code: 300
       keystone-admin-api:
         address: "{{ server.bind.private_protocol }}://{{ server.bind.address|replace('0.0.0.0', '127.0.0.1') }}:{{ server.bind.private_port }}/"