diff --git a/defaults/main.yml b/defaults/main.yml
index b402148b..632dd07c 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -193,7 +193,7 @@ glance_keystone_auth_plugin: password
 glance_image_cache_max_size: 10737418240
 
 # CORS options
-glance_cors_allowed_origin: "{{ (glance_show_multiple_locations | bool) | ternary(external_lb_vip_address, None) }}"
+glance_cors_allowed_origin: "{{ (glance_show_multiple_locations | bool) | ternary(openstack_service_publicuri_proto | default('http') + '://' + external_lb_vip_address, None) }}"
 # If ``glance_api_workers`` is unset the system will use half the number of available VCPUS to
 # compute the number of api workers to use.
 # glance_api_workers: 16