diff --git a/HACKING.rst b/HACKING.rst
index 31da34521df..18b63422c11 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -16,6 +16,7 @@ Below you can find a list of checks specific to this repository.
 
 - [N322] Detect common errors with assert_called_once_with
 - [N328] Detect wrong usage with assertEqual
+- [N329] Use assertCountEqual() instead of assertItemsEqual()
 - [N330] Use assertEqual(*empty*, observed) instead of
          assertEqual(observed, *empty*)
 - [N331] Detect wrong usage with assertTrue(isinstance()).
diff --git a/neutron/hacking/checks.py b/neutron/hacking/checks.py
index 6a8ee69b04d..8043b53890d 100644
--- a/neutron/hacking/checks.py
+++ b/neutron/hacking/checks.py
@@ -91,9 +91,9 @@ def check_asserttruefalse(logical_line, filename):
 
 @core.flake8ext
 def check_assertitemsequal(logical_line, filename):
-    """N328 - Don't use assertItemsEqual."""
+    """N329 - Don't use assertItemsEqual."""
     if 'neutron/tests/' in filename:
-        if re.search(r"assertItemsEqual\(", logical_line):
+        if re.search(r"assertItemsEqual[\(,]", logical_line):
             msg = ("N329: Use assertCountEqual() instead of "
                    "assertItemsEqual()")
             yield (0, msg)
diff --git a/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_impl_idl.py b/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_impl_idl.py
index 3bd6ef4aa3b..e3fb7ad0b6e 100644
--- a/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_impl_idl.py
+++ b/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_impl_idl.py
@@ -244,7 +244,7 @@ class TestNbApi(BaseOvnIdlTest):
         exp_values = [(lb['name'], lb['external_ids'])
                       for lb in self.data['lbs']]
         lbs_values = [(lb.name, lb.external_ids) for lb in lbs]
-        self.assertItemsEqual(exp_values, lbs_values)
+        self.assertCountEqual(exp_values, lbs_values)
 
     def test_get_router_floatingip_lbs(self):
         f = self.nbapi.get_router_floatingip_lbs
@@ -260,7 +260,7 @@ class TestNbApi(BaseOvnIdlTest):
             lbs_values = [(lb.name, lb.external_ids)
                           for lb in f(exp_router_name)]
             self.assertTrue(exp_values)
-            self.assertItemsEqual(exp_values, lbs_values)
+            self.assertCountEqual(exp_values, lbs_values)
 
     def test_get_floatingip_in_nat_or_lb(self):
         f = self.nbapi.get_floatingip_in_nat_or_lb
diff --git a/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovn_db_sync.py b/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovn_db_sync.py
index 0687661eefb..216f29fc93a 100644
--- a/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovn_db_sync.py
+++ b/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovn_db_sync.py
@@ -1429,9 +1429,9 @@ class TestOvnNbSync(base.TestOVNFunctionalBase):
                     nb_pfs.append(pf)
 
         if should_match:
-            self.assertItemsEqual(nb_pfs, db_pfs)
+            self.assertCountEqual(nb_pfs, db_pfs)
         else:
-            self.assertRaises(AssertionError, self.assertItemsEqual,
+            self.assertRaises(AssertionError, self.assertCountEqual,
                               nb_pfs, db_pfs)
 
     def _validate_port_groups(self, should_match=True):
diff --git a/tox.ini b/tox.ini
index dfff3509e7d..e5baebc6863 100644
--- a/tox.ini
+++ b/tox.ini
@@ -185,6 +185,7 @@ extension =
   # Checks specific to neutron repo
   N322 = neutron.hacking.checks:check_assert_called_once_with
   N328 = neutron.hacking.checks:check_asserttruefalse
+  N329 = neutron.hacking.checks:check_assertitemsequal
   N330 = neutron.hacking.checks:check_assertempty
   N331 = neutron.hacking.checks:check_assertisinstance
   N332 = neutron.hacking.checks:check_assertequal_for_httpcode