diff --git a/nova/api/openstack/compute/extension_info.py b/nova/api/openstack/compute/extension_info.py
index 60722adfc3..d3eb9be948 100644
--- a/nova/api/openstack/compute/extension_info.py
+++ b/nova/api/openstack/compute/extension_info.py
@@ -21,7 +21,6 @@ from nova.api.openstack import wsgi
 from nova import exception
 from nova.policies import extensions as ext_policies
 
-ALIAS = 'extensions'
 LOG = logging.getLogger(__name__)
 
 
@@ -896,24 +895,6 @@ class ExtensionInfoController(wsgi.Controller):
         raise webob.exc.HTTPNotFound()
 
 
-class ExtensionInfo(extensions.V21APIExtensionBase):
-    """Extension information."""
-
-    name = "Extensions"
-    alias = ALIAS
-    version = 1
-
-    def get_resources(self):
-        resources = [
-            extensions.ResourceExtension(
-                ALIAS, ExtensionInfoController(self.extension_info),
-                member_name='extension')]
-        return resources
-
-    def get_controller_extensions(self):
-        return []
-
-
 class LoadedExtensionInfo(object):
     """Keep track of all loaded API extensions."""
 
diff --git a/nova/api/openstack/compute/routes.py b/nova/api/openstack/compute/routes.py
index 1b8a62045d..f7b170320b 100644
--- a/nova/api/openstack/compute/routes.py
+++ b/nova/api/openstack/compute/routes.py
@@ -148,6 +148,10 @@ cloudpipe_controller = functools.partial(
     _create_controller, cloudpipe.CloudpipeController, [], [])
 
 
+extensions_controller = functools.partial(
+    _create_controller, extension_info.ExtensionInfoController, [], [])
+
+
 fixed_ips_controller = functools.partial(_create_controller,
     fixed_ips.FixedIPController, [], [])
 
@@ -396,6 +400,12 @@ volumes_controller = functools.partial(_create_controller,
 ROUTE_LIST = (
     # NOTE: '/os-volumes_boot' is a clone of '/servers'. We may want to
     # deprecate it in the future.
+    ('/extensions', {
+        'GET': [extensions_controller, 'index'],
+    }),
+    ('/extensions/{id}', {
+        'GET': [extensions_controller, 'show'],
+    }),
     ('/flavors', {
         'GET': [flavor_controller, 'index'],
         'POST': [flavor_controller, 'create']
diff --git a/setup.cfg b/setup.cfg
index 02e407da00..755192e620 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -72,7 +72,6 @@ wsgi_scripts =
     nova-metadata-wsgi = nova.api.metadata.wsgi:init_application
 
 nova.api.v21.extensions =
-    extension_info = nova.api.openstack.compute.extension_info:ExtensionInfo
     versions = nova.api.openstack.compute.versionsV21:Versions
 
 nova.api.v21.test_extensions =