diff --git a/neutron/extensions/_segments_peer_subnet_host_routes_lib.py b/neutron/extensions/_segments_peer_subnet_host_routes_lib.py
deleted file mode 100644
index d0e53bb2ad5..00000000000
--- a/neutron/extensions/_segments_peer_subnet_host_routes_lib.py
+++ /dev/null
@@ -1,32 +0,0 @@
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-"""
-TODO(hjensas): This module should be deleted once neutron-lib containing
-Change-Id: Ibd1b565a04a6d979b6e56ca5469af644894d6b4c is released.
-"""
-
-from neutron_lib.api.definitions import segment
-
-
-ALIAS = 'segments-peer-subnet-host-routes'
-IS_SHIM_EXTENSION = True
-IS_STANDARD_ATTR_EXTENSION = False
-NAME = 'Segments peer-subnet host routes'
-DESCRIPTION = 'Add host routes to subnets on a routed network (segments)'
-UPDATED_TIMESTAMP = '2018-06-12T10:00:00-00:00'
-RESOURCE_ATTRIBUTE_MAP = {}
-SUB_RESOURCE_ATTRIBUTE_MAP = {}
-ACTION_MAP = {}
-REQUIRED_EXTENSIONS = [segment.ALIAS]
-OPTIONAL_EXTENSIONS = []
-ACTION_STATUS = {}
diff --git a/neutron/extensions/segments_peer_subnet_host_routes.py b/neutron/extensions/segments_peer_subnet_host_routes.py
index 32855e79628..61d81be9d71 100644
--- a/neutron/extensions/segments_peer_subnet_host_routes.py
+++ b/neutron/extensions/segments_peer_subnet_host_routes.py
@@ -10,9 +10,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutron.extensions import _segments_peer_subnet_host_routes_lib as apidef
+from neutron_lib.api.definitions import segments_peer_subnet_host_routes
 from neutron_lib.api import extensions
 
 
 class Segments_peer_subnet_host_routes(extensions.APIExtensionDescriptor):
-    api_definition = apidef
+    api_definition = segments_peer_subnet_host_routes