diff --git a/ansible/group_vars/all.yml b/ansible/group_vars/all.yml
index 71e679bfef..349ebf08f5 100644
--- a/ansible/group_vars/all.yml
+++ b/ansible/group_vars/all.yml
@@ -108,7 +108,7 @@ docker_restart_policy_retry: "10"
 
 # Extra docker options for Zun
 docker_configure_for_zun: "no"
-docker_zun_options: -H fd:// -H tcp://{{ api_interface_address }}:2375 --cluster-store=etcd://{% for host in groups['etcd'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ hostvars[host]['etcd_client_port'] }}{% if not loop.last %},{% endif %}{% endfor %}
+docker_zun_options: -H fd:// -H tcp://{{ api_interface_address }}:2375 --cluster-store=etcd://{% for host in groups.get('etcd', []) %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ hostvars[host]['etcd_client_port'] }}{% if not loop.last %},{% endif %}{% endfor %}
 
 # Common options used throughout Docker
 docker_common_options: