diff --git a/neutron/agent/common/ovsdb_monitor.py b/neutron/agent/common/ovsdb_monitor.py
index a3a575568d3..a6d71665af1 100644
--- a/neutron/agent/common/ovsdb_monitor.py
+++ b/neutron/agent/common/ovsdb_monitor.py
@@ -16,7 +16,6 @@ from oslo_log import log as logging
 from oslo_serialization import jsonutils
 
 from neutron.agent.common import async_process
-from neutron.agent.common import ovs_lib
 from neutron.agent.ovsdb import api as ovsdb
 from neutron.agent.ovsdb.native import helpers
 from neutron.common import utils
@@ -109,11 +108,6 @@ class SimpleInterfaceMonitor(OvsdbMonitor):
                     external_ids = ovsdb.val_to_py(external_ids)
                 if ofport:
                     ofport = ovsdb.val_to_py(ofport)
-                if ofport == ovs_lib.INVALID_OFPORT:
-                    LOG.debug("Ofport of port %(name)s is %(ofport)s. "
-                              "Skipping its event.",
-                              {'name': name, 'ofport': ofport})
-                    continue
                 device = {'name': name,
                           'ofport': ofport,
                           'external_ids': external_ids}
diff --git a/neutron/tests/unit/agent/common/test_ovsdb_monitor.py b/neutron/tests/unit/agent/common/test_ovsdb_monitor.py
index 71043b18021..fc645ee61d9 100644
--- a/neutron/tests/unit/agent/common/test_ovsdb_monitor.py
+++ b/neutron/tests/unit/agent/common/test_ovsdb_monitor.py
@@ -85,12 +85,3 @@ class TestSimpleInterfaceMonitor(base.BaseTestCase):
             self.monitor.process_events()
             self.assertEqual(self.monitor.new_events['added'][0]['ofport'],
                              ovs_lib.UNASSIGNED_OFPORT)
-
-    def process_event_invalid_of_port(self):
-        output = '{"data":[["e040fbec-0579-4990-8324-d338da33ae88","insert",'
-        output += '"m50",-1,["map",[]]]],"headings":["row","action",'
-        output += '"name","ofport","external_ids"]}'
-        with mock.patch.object(
-                self.monitor, 'iter_stdout', return_value=[output]):
-            self.monitor.process_events()
-            self.assertEqual([], self.monitor.new_events['added'])