diff --git a/nova/api/openstack/compute/migrations.py b/nova/api/openstack/compute/migrations.py
index e932d9ee5041..bdb4fae2a8a7 100644
--- a/nova/api/openstack/compute/migrations.py
+++ b/nova/api/openstack/compute/migrations.py
@@ -19,9 +19,6 @@ from nova.objects import base as obj_base
 from nova.policies import migrations as migrations_policies
 
 
-ALIAS = "os-migrations"
-
-
 class MigrationsController(wsgi.Controller):
     """Controller for accessing migrations in OpenStack API."""
 
@@ -80,20 +77,3 @@ class MigrationsController(wsgi.Controller):
             return {'migrations': self._output(req, migrations, True)}
 
         return {'migrations': self._output(req, migrations)}
-
-
-class Migrations(extensions.V21APIExtensionBase):
-    """Provide data on migrations."""
-    name = "Migrations"
-    alias = ALIAS
-    version = 1
-
-    def get_resources(self):
-        resources = []
-        resource = extensions.ResourceExtension(ALIAS,
-                                                MigrationsController())
-        resources.append(resource)
-        return resources
-
-    def get_controller_extensions(self):
-        return []
diff --git a/nova/api/openstack/compute/routes.py b/nova/api/openstack/compute/routes.py
index 33d2e85e91cf..287ffbc42f29 100644
--- a/nova/api/openstack/compute/routes.py
+++ b/nova/api/openstack/compute/routes.py
@@ -49,6 +49,7 @@ from nova.api.openstack.compute import instance_usage_audit_log
 from nova.api.openstack.compute import keypairs
 from nova.api.openstack.compute import lock_server
 from nova.api.openstack.compute import migrate_server
+from nova.api.openstack.compute import migrations
 from nova.api.openstack.compute import multinic
 from nova.api.openstack.compute import pause_server
 from nova.api.openstack.compute import quota_sets
@@ -159,6 +160,10 @@ instance_usage_audit_log_controller = functools.partial(_create_controller,
     instance_usage_audit_log.InstanceUsageAuditLogController, [], [])
 
 
+migrations_controller = functools.partial(_create_controller,
+    migrations.MigrationsController, [], [])
+
+
 quota_set_controller = functools.partial(_create_controller,
     quota_sets.QuotaSetsController, [], [])
 
@@ -342,6 +347,9 @@ ROUTE_LIST = (
         'GET': [keypairs_controller, 'show'],
         'DELETE': [keypairs_controller, 'delete']
     }),
+    ('/os-migrations', {
+        'GET': [migrations_controller, 'index']
+    }),
     ('/os-quota-sets/{id}', {
         'GET': [quota_set_controller, 'show'],
         'PUT': [quota_set_controller, 'update'],
diff --git a/setup.cfg b/setup.cfg
index 5f15c51e9c15..3dca6a46a3ef 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -89,7 +89,6 @@ nova.api.v21.extensions =
     instance_actions = nova.api.openstack.compute.instance_actions:InstanceActions
     ips = nova.api.openstack.compute.ips:IPs
     limits = nova.api.openstack.compute.limits:Limits
-    migrations = nova.api.openstack.compute.migrations:Migrations
     multiple_create = nova.api.openstack.compute.multiple_create:MultipleCreate
     networks = nova.api.openstack.compute.networks:Networks
     networks_associate = nova.api.openstack.compute.networks_associate:NetworksAssociate