diff --git a/ansible/roles/telegraf/templates/telegraf.conf.j2 b/ansible/roles/telegraf/templates/telegraf.conf.j2
index a5c3185d07..2b81a70fd0 100644
--- a/ansible/roles/telegraf/templates/telegraf.conf.j2
+++ b/ansible/roles/telegraf/templates/telegraf.conf.j2
@@ -19,7 +19,7 @@
   retention_policy = "autogen"
   write_consistency = "any"
   timeout = "5s"
-  tls_ca = {{ openstack_cacert }}
+  tls_ca = "{{ openstack_cacert }}"
 {% endfor %}
 {% endif %}
 [[inputs.cpu]]