diff --git a/nova/api/openstack/compute/certificates.py b/nova/api/openstack/compute/certificates.py
index dd9cc4aa38ce..3f588f465785 100644
--- a/nova/api/openstack/compute/certificates.py
+++ b/nova/api/openstack/compute/certificates.py
@@ -17,8 +17,6 @@ import webob.exc
 from nova.api.openstack import extensions
 from nova.api.openstack import wsgi
 
-ALIAS = "os-certificates"
-
 
 class CertificatesController(wsgi.Controller):
     """The x509 Certificates API controller for the OpenStack API."""
@@ -32,21 +30,3 @@ class CertificatesController(wsgi.Controller):
     def create(self, req, body=None):
         """Create a certificate."""
         raise webob.exc.HTTPGone()
-
-
-class Certificates(extensions.V21APIExtensionBase):
-    """Certificates support."""
-
-    name = "Certificates"
-    alias = ALIAS
-    version = 1
-
-    def get_resources(self):
-        resources = [
-            extensions.ResourceExtension(ALIAS,
-                                         CertificatesController(),
-                                         member_actions={})]
-        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 9930aa0eaa70..2e1ae2a179cc 100644
--- a/nova/api/openstack/compute/routes.py
+++ b/nova/api/openstack/compute/routes.py
@@ -23,6 +23,7 @@ from nova.api.openstack.compute import agents
 from nova.api.openstack.compute import aggregates
 from nova.api.openstack.compute import assisted_volume_snapshots
 from nova.api.openstack.compute import availability_zone
+from nova.api.openstack.compute import certificates
 from nova.api.openstack.compute import config_drive
 from nova.api.openstack.compute import console_output
 from nova.api.openstack.compute import create_backup
@@ -100,6 +101,10 @@ availability_zone_controller = functools.partial(
     _create_controller, availability_zone.AvailabilityZoneController, [], [])
 
 
+certificates_controller = functools.partial(
+    _create_controller, certificates.CertificatesController, [], [])
+
+
 keypairs_controller = functools.partial(
     _create_controller, keypairs.KeypairController, [], [])
 
@@ -318,6 +323,12 @@ ROUTE_LIST = (
     ('/os-instance_usage_audit_log/{id}', {
         'GET': [instance_usage_audit_log_controller, 'show']
     }),
+    ('/os-certificates', {
+        'POST': [certificates_controller, 'create']
+    }),
+    ('/os-certificates/{id}', {
+        'GET': [certificates_controller, 'show']
+    }),
     ('/os-keypairs', {
         'GET': [keypairs_controller, 'index'],
         'POST': [keypairs_controller, 'create']
diff --git a/setup.cfg b/setup.cfg
index cd35a5795139..4267a3e36a0d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -76,7 +76,6 @@ nova.api.v21.extensions =
     baremetal_nodes = nova.api.openstack.compute.baremetal_nodes:BareMetalNodes
     block_device_mapping = nova.api.openstack.compute.block_device_mapping:BlockDeviceMapping
     cells = nova.api.openstack.compute.cells:Cells
-    certificates = nova.api.openstack.compute.certificates:Certificates
     cloudpipe = nova.api.openstack.compute.cloudpipe:Cloudpipe
     console_auth_tokens = nova.api.openstack.compute.console_auth_tokens:ConsoleAuthTokens
     consoles = nova.api.openstack.compute.consoles:Consoles