diff --git a/nova/api/openstack/compute/legacy_v2/contrib/server_external_events.py b/nova/api/openstack/compute/legacy_v2/contrib/server_external_events.py
index fcc42b9c8275..7a015759e94d 100644
--- a/nova/api/openstack/compute/legacy_v2/contrib/server_external_events.py
+++ b/nova/api/openstack/compute/legacy_v2/contrib/server_external_events.py
@@ -83,7 +83,8 @@ class ServerExternalEventsController(wsgi.Controller):
                 except exception.InstanceNotFound:
                     LOG.debug('Dropping event %(name)s:%(tag)s for unknown '
                               'instance %(instance_uuid)s',
-                              dict(event))
+                              {'name': event.name, 'tag': event.tag,
+                               'instance_uuid': event.instance_uuid})
                     _event['status'] = 'failed'
                     _event['code'] = 404
                     result = 207
@@ -97,7 +98,8 @@ class ServerExternalEventsController(wsgi.Controller):
                     accepted_instances.add(instance)
                     LOG.info(_LI('Creating event %(name)s:%(tag)s for '
                                  'instance %(instance_uuid)s'),
-                              dict(event))
+                              {'name': event.name, 'tag': event.tag,
+                               'instance_uuid': event.instance_uuid})
                     # NOTE: as the event is processed asynchronously verify
                     # whether 202 is a more suitable response code than 200
                     _event['status'] = 'completed'
diff --git a/nova/api/openstack/compute/server_external_events.py b/nova/api/openstack/compute/server_external_events.py
index 3ec77ad1546d..6a6b3592da15 100644
--- a/nova/api/openstack/compute/server_external_events.py
+++ b/nova/api/openstack/compute/server_external_events.py
@@ -71,7 +71,8 @@ class ServerExternalEventsController(wsgi.Controller):
                 except exception.InstanceNotFound:
                     LOG.debug('Dropping event %(name)s:%(tag)s for unknown '
                               'instance %(instance_uuid)s',
-                              dict(event))
+                              {'name': event.name, 'tag': event.tag,
+                               'instance_uuid': event.instance_uuid})
                     _event['status'] = 'failed'
                     _event['code'] = 404
                     result = 207
@@ -85,7 +86,8 @@ class ServerExternalEventsController(wsgi.Controller):
                     accepted_instances.add(instance)
                     LOG.info(_LI('Creating event %(name)s:%(tag)s for '
                                  'instance %(instance_uuid)s'),
-                              dict(event))
+                              {'name': event.name, 'tag': event.tag,
+                               'instance_uuid': event.instance_uuid})
                     # NOTE: as the event is processed asynchronously verify
                     # whether 202 is a more suitable response code than 200
                     _event['status'] = 'completed'
diff --git a/nova/objects/external_event.py b/nova/objects/external_event.py
index beea55d4ba13..f31c4dafe9f9 100644
--- a/nova/objects/external_event.py
+++ b/nova/objects/external_event.py
@@ -29,10 +29,8 @@ EVENT_NAMES = [
 EVENT_STATUSES = ['failed', 'completed', 'in-progress']
 
 
-# TODO(berrange): Remove NovaObjectDictCompat
 @obj_base.NovaObjectRegistry.register
-class InstanceExternalEvent(obj_base.NovaObject,
-                            obj_base.NovaObjectDictCompat):
+class InstanceExternalEvent(obj_base.NovaObject):
     # Version 1.0: Initial version
     #              Supports network-changed and vif-plugged
     # Version 1.1: adds network-vif-deleted event