diff --git a/nova/flags.py b/nova/flags.py
index b9aad32b..4345b477 100644
--- a/nova/flags.py
+++ b/nova/flags.py
@@ -469,3 +469,5 @@ DEFINE_integer('service_down_time', 60,
         'maximum time since last check-in for up service')
 DEFINE_string('default_schedule_zone', None,
               'zone to use when user doesnt specify one')
+DEFINE_list('isolated_images', [], 'Images to run on isolated host')
+DEFINE_list('isolated_hosts', [], 'Host reserved for specific images')
diff --git a/nova/scheduler/simple.py b/nova/scheduler/simple.py
index 64ebfb75..11270a13 100644
--- a/nova/scheduler/simple.py
+++ b/nova/scheduler/simple.py
@@ -35,8 +35,6 @@ flags.DEFINE_integer("max_gigabytes", 10000,
                      "maximum number of volume gigabytes to allow per host")
 flags.DEFINE_integer("max_networks", 1000,
                      "maximum number of networks to allow per host")
-flags.DEFINE_list('isolated_images', [], 'Images to run on isolated host')
-flags.DEFINE_list('isolated_hosts', [], 'Host reserved for specific images')
 flags.DEFINE_boolean('skip_isolated_core_check', True,
                      'Allow overcommitting vcpus on isolated hosts')