diff --git a/ansible/roles/horizon/templates/local_settings.j2 b/ansible/roles/horizon/templates/local_settings.j2
index c8ad4e2cb3..03c2168641 100644
--- a/ansible/roles/horizon/templates/local_settings.j2
+++ b/ansible/roles/horizon/templates/local_settings.j2
@@ -65,7 +65,7 @@ OPENSTACK_API_VERSIONS = {
 
 # Set this to True if running on multi-domain model. When this is enabled, it
 # will require user to enter the Domain name in addition to username for login.
-#OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT = False
+OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT = True
 
 # Overrides the default domain used when running on single-domain model
 # with Keystone V3. All entities will be created in the default domain.