diff --git a/templates/local_settings.py.erb b/templates/local_settings.py.erb
index 409905d6..715d25c1 100644
--- a/templates/local_settings.py.erb
+++ b/templates/local_settings.py.erb
@@ -1028,7 +1028,8 @@ OVERVIEW_DAYS_RANGE = <%= @overview_days_range %>
 REST_API_REQUIRED_SETTINGS = ['OPENSTACK_HYPERVISOR_FEATURES',
                               'LAUNCH_INSTANCE_DEFAULTS',
                               'OPENSTACK_IMAGE_FORMATS',
-                              'CREATE_IMAGE_DEFAULTS']
+                              'CREATE_IMAGE_DEFAULTS',
+                              'OPENSTACK_KEYSTONE_BACKEND',]
 
 # Additional settings can be made available to the client side for
 # extensibility by specifying them in REST_API_ADDITIONAL_SETTINGS