diff --git a/modules/openstack_project/templates/logstash/jenkins-subunit-worker.yaml.erb b/modules/openstack_project/templates/logstash/jenkins-subunit-worker.yaml.erb
index d56144c1c3..b631a85df5 100644
--- a/modules/openstack_project/templates/logstash/jenkins-subunit-worker.yaml.erb
+++ b/modules/openstack_project/templates/logstash/jenkins-subunit-worker.yaml.erb
@@ -6,4 +6,4 @@ mqtt-port: 8883
 mqtt-topic: gearman-subunit/<%= @hostname %>
 mqtt-user: <%= @mqtt_user %>
 mqtt-pass: <%= @mqtt_pass %>
-mqtt-ca_certs: /etc/subunit2sql/mqtt-root-CA.pem.crt
+mqtt-ca-certs: /etc/subunit2sql/mqtt-root-CA.pem.crt