diff --git a/tests/templates/globals-default.j2 b/tests/templates/globals-default.j2
index 4fc5a908a2..7d983d5bbc 100644
--- a/tests/templates/globals-default.j2
+++ b/tests/templates/globals-default.j2
@@ -24,11 +24,6 @@ openstack_release: "{{ build_image_tag }}"
 {% else %}
 # use docker hub images
 docker_namespace: "kolla"
-{% if need_build_image and is_previous_release %}
-# NOTE(mgoddard): Ensure that the insecure local registry is trusted, since it
-# will be the source of images during the upgrade.
-docker_custom_option: "--insecure-registry {{ api_interface_address }}:4000"
-{% endif %}
 {% if not is_previous_release %}
 openstack_release: "{{ zuul.branch | basename }}"
 {% else %}