diff --git a/neutron/tests/unit/db/test_db_base_plugin_v2.py b/neutron/tests/unit/db/test_db_base_plugin_v2.py
index 22fdef55c3e..13ff036d069 100644
--- a/neutron/tests/unit/db/test_db_base_plugin_v2.py
+++ b/neutron/tests/unit/db/test_db_base_plugin_v2.py
@@ -3813,7 +3813,9 @@ class TestSubnetsV2(NeutronDbPluginV2TestCase):
                                [{'nexthop': '10.0.2.20',
                                  'destination': '100.0.0.0/8'},
                                 {'nexthop': '10.0.2.20',
-                                 'destination': '100.0.0.0/8'}]]
+                                 'destination': '100.0.0.0/8'}],
+                               [{'destination': '100.1.1.1/8',
+                                 'nexthop': '10.0.2.20'}]]
             tenant_id = network['network']['tenant_id']
             for hostroutes in hostroute_pools:
                 data = {'subnet': {'network_id': network['network']['id'],
diff --git a/neutron/tests/unit/extensions/test_extraroute.py b/neutron/tests/unit/extensions/test_extraroute.py
index 162403d06c7..ee0bb51970e 100644
--- a/neutron/tests/unit/extensions/test_extraroute.py
+++ b/neutron/tests/unit/extensions/test_extraroute.py
@@ -377,6 +377,14 @@ class ExtraRouteDBTestCaseBase(object):
                                              routes}},
                                  expected_code=exc.HTTPBadRequest.code)
 
+                    routes = [{'destination': '1.1.1.1/24',
+                               'nexthop': '10.0.1.3'}]
+
+                    self._update('routers', r['router']['id'],
+                                 {'router': {'routes':
+                                             routes}},
+                                 expected_code=exc.HTTPBadRequest.code)
+
                     # clean-up
                     self._router_interface_action('remove',
                                                   r['router']['id'],