diff --git a/nova/api/openstack/compute/routes.py b/nova/api/openstack/compute/routes.py
index f73a4ffde038..7e9b2f4ff115 100644
--- a/nova/api/openstack/compute/routes.py
+++ b/nova/api/openstack/compute/routes.py
@@ -72,6 +72,7 @@ from nova.api.openstack.compute import quota_classes
 from nova.api.openstack.compute import quota_sets
 from nova.api.openstack.compute import remote_consoles
 from nova.api.openstack.compute import rescue
+from nova.api.openstack.compute import security_group_default_rules
 from nova.api.openstack.compute import security_groups
 from nova.api.openstack.compute import server_diagnostics
 from nova.api.openstack.compute import server_external_events
@@ -253,6 +254,10 @@ security_group_controller = functools.partial(_create_controller,
     security_groups.SecurityGroupController, [], [])
 
 
+security_group_default_rules_controller = functools.partial(_create_controller,
+    security_group_default_rules.SecurityGroupDefaultRulesController, [], [])
+
+
 security_group_rules_controller = functools.partial(_create_controller,
     security_groups.SecurityGroupRulesController, [], [])
 
@@ -620,6 +625,14 @@ ROUTE_LIST = (
     ('/os-quota-sets/{id}/defaults', {
         'GET': [quota_set_controller, 'defaults']
     }),
+    ('/os-security-group-default-rules', {
+        'GET': [security_group_default_rules_controller, 'index'],
+        'POST': [security_group_default_rules_controller, 'create']
+    }),
+    ('/os-security-group-default-rules/{id}', {
+        'GET': [security_group_default_rules_controller, 'show'],
+        'DELETE': [security_group_default_rules_controller, 'delete']
+    }),
     ('/os-security-group-rules', {
         'POST': [security_group_rules_controller, 'create']
     }),
diff --git a/nova/api/openstack/compute/security_group_default_rules.py b/nova/api/openstack/compute/security_group_default_rules.py
index 3468f7f8d041..b4b6a8bef88e 100644
--- a/nova/api/openstack/compute/security_group_default_rules.py
+++ b/nova/api/openstack/compute/security_group_default_rules.py
@@ -25,9 +25,6 @@ from nova.network.security_group import openstack_driver
 from nova.policies import security_group_default_rules as sgdr_policies
 
 
-ALIAS = "os-security-group-default-rules"
-
-
 class SecurityGroupDefaultRulesController(sg.SecurityGroupControllerBase,
                                           wsgi.Controller):
 
@@ -135,20 +132,3 @@ class SecurityGroupDefaultRulesController(sg.SecurityGroupControllerBase,
         sg_rule['ip_range'] = {}
         sg_rule['ip_range'] = {'cidr': rule['cidr']}
         return sg_rule
-
-
-class SecurityGroupDefaultRules(extensions.V21APIExtensionBase):
-    """Default rules for security group support."""
-    name = "SecurityGroupDefaultRules"
-    alias = ALIAS
-    version = 1
-
-    def get_resources(self):
-        resources = [
-            extensions.ResourceExtension(ALIAS,
-                SecurityGroupDefaultRulesController())]
-
-        return resources
-
-    def get_controller_extensions(self):
-        return []
diff --git a/setup.cfg b/setup.cfg
index 5370fe9e7712..caa8f8ef01bf 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -74,7 +74,6 @@ wsgi_scripts =
 nova.api.v21.extensions =
     baremetal_nodes = nova.api.openstack.compute.baremetal_nodes:BareMetalNodes
     extension_info = nova.api.openstack.compute.extension_info:ExtensionInfo
-    security_group_default_rules = nova.api.openstack.compute.security_group_default_rules:SecurityGroupDefaultRules
     versions = nova.api.openstack.compute.versionsV21:Versions
     volumes = nova.api.openstack.compute.volumes:Volumes