diff --git a/roles/docker/templates/docker-options.conf.j2 b/roles/docker/templates/docker-options.conf.j2
index 576fc1abd..f1587ec4d 100644
--- a/roles/docker/templates/docker-options.conf.j2
+++ b/roles/docker/templates/docker-options.conf.j2
@@ -1,5 +1,5 @@
 [Service]
-Environment="DOCKER_OPTS={{ docker_options | default('') }} --iptables=false"
+Environment="DOCKER_OPTS={{ docker_options|default('') }} --iptables=false"
 {% if docker_mount_flags is defined and docker_mount_flags != "" %}
 MountFlags={{ docker_mount_flags }}
 {% endif %}