diff --git a/nova/api/openstack/compute/cells.py b/nova/api/openstack/compute/cells.py
index 6e8eb6538898..1e85e37140f7 100644
--- a/nova/api/openstack/compute/cells.py
+++ b/nova/api/openstack/compute/cells.py
@@ -36,8 +36,6 @@ from nova import rpc
 
 CONF = nova.conf.CONF
 
-ALIAS = "os-cells"
-
 
 def _filter_keys(item, keys):
     """Filters all model attributes except for keys
@@ -303,32 +301,3 @@ class CellsController(wsgi.Controller):
             deleted = strutils.bool_from_string(deleted, strict=True)
         self.cells_rpcapi.sync_instances(context, project_id=project_id,
                 updated_since=updated_since, deleted=deleted)
-
-
-class Cells(extensions.V21APIExtensionBase):
-    """Enables cells-related functionality such as adding neighbor cells,
-    listing neighbor cells, and getting the capabilities of the local cell.
-    """
-
-    name = "Cells"
-    alias = ALIAS
-    version = 1
-
-    def get_resources(self):
-        coll_actions = {
-                'detail': 'GET',
-                'info': 'GET',
-                'sync_instances': 'POST',
-                'capacities': 'GET',
-                }
-        memb_actions = {
-                'capacities': 'GET',
-                }
-
-        res = extensions.ResourceExtension(ALIAS, CellsController(),
-                                           collection_actions=coll_actions,
-                                           member_actions=memb_actions)
-        return [res]
-
-    def get_controller_extensions(self):
-        return []
diff --git a/nova/api/openstack/compute/routes.py b/nova/api/openstack/compute/routes.py
index f094a9128c28..925c27d06411 100644
--- a/nova/api/openstack/compute/routes.py
+++ b/nova/api/openstack/compute/routes.py
@@ -24,6 +24,7 @@ from nova.api.openstack.compute import aggregates
 from nova.api.openstack.compute import assisted_volume_snapshots
 from nova.api.openstack.compute import attach_interfaces
 from nova.api.openstack.compute import availability_zone
+from nova.api.openstack.compute import cells
 from nova.api.openstack.compute import certificates
 from nova.api.openstack.compute import cloudpipe
 from nova.api.openstack.compute import config_drive
@@ -123,6 +124,10 @@ availability_zone_controller = functools.partial(
     _create_controller, availability_zone.AvailabilityZoneController, [], [])
 
 
+cells_controller = functools.partial(
+    _create_controller, cells.CellsController, [], [])
+
+
 certificates_controller = functools.partial(
     _create_controller, certificates.CertificatesController, [], [])
 
@@ -397,6 +402,30 @@ ROUTE_LIST = (
     ('/os-availability-zone/detail', {
         'GET': [availability_zone_controller, 'detail'],
     }),
+    ('/os-cells', {
+        'POST': [cells_controller, 'create'],
+        'GET': [cells_controller, 'index'],
+    }),
+    ('/os-cells/capacities', {
+        'GET': [cells_controller, 'capacities']
+    }),
+    ('/os-cells/detail', {
+        'GET': [cells_controller, 'detail']
+    }),
+    ('/os-cells/info', {
+        'GET': [cells_controller, 'info']
+    }),
+    ('/os-cells/sync_instances', {
+        'POST': [cells_controller, 'sync_instances']
+    }),
+    ('/os-cells/{id}', {
+        'GET': [cells_controller, 'show'],
+        'PUT': [cells_controller, 'update'],
+        'DELETE': [cells_controller, 'delete']
+    }),
+    ('/os-cells/{id}/capacities', {
+        'GET': [cells_controller, 'capacities']
+    }),
     ('/os-certificates', {
         'POST': [certificates_controller, 'create']
     }),
diff --git a/setup.cfg b/setup.cfg
index b4c751a305db..1eb5c56d67d9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -75,7 +75,6 @@ wsgi_scripts =
 
 nova.api.v21.extensions =
     baremetal_nodes = nova.api.openstack.compute.baremetal_nodes:BareMetalNodes
-    cells = nova.api.openstack.compute.cells:Cells
     extension_info = nova.api.openstack.compute.extension_info:ExtensionInfo
     images = nova.api.openstack.compute.images:Images
     image_metadata = nova.api.openstack.compute.image_metadata:ImageMetadata