diff --git a/neutron/db/db_base_plugin_common.py b/neutron/db/db_base_plugin_common.py
index b79ac10cb43..e1e39f5bb25 100644
--- a/neutron/db/db_base_plugin_common.py
+++ b/neutron/db/db_base_plugin_common.py
@@ -50,7 +50,7 @@ def filter_fields(f):
         fields = kwargs.get('fields')
         if not fields:
             try:
-                pos = f.func_code.co_varnames.index('fields')
+                pos = f.__code__.co_varnames.index('fields')
                 fields = args[pos]
             except (IndexError, ValueError):
                 return result
diff --git a/neutron/plugins/cisco/l2device_plugin_base.py b/neutron/plugins/cisco/l2device_plugin_base.py
index 56fd91f199d..660e5f8d05e 100644
--- a/neutron/plugins/cisco/l2device_plugin_base.py
+++ b/neutron/plugins/cisco/l2device_plugin_base.py
@@ -160,9 +160,9 @@ class L2DevicePluginBase(object):
                         fn_obj = base.__dict__[method]
                         if inspect.isfunction(fn_obj):
                             abstract_fn_obj = cls.__dict__[method]
-                            arg_count = fn_obj.func_code.co_argcount
+                            arg_count = fn_obj.__code__.co_argcount
                             expected_arg_count = \
-                                abstract_fn_obj.func_code.co_argcount
+                                abstract_fn_obj.__code__.co_argcount
                             method_ok = arg_count == expected_arg_count
                 if method_ok:
                     continue
diff --git a/tox.ini b/tox.ini
index 6a6a6153b05..df5fdb85ff4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -254,7 +254,8 @@ commands = python -m testtools.run \
     neutron.tests.unit.ipam.test_requests \
     neutron.tests.unit.notifiers.test_nova \
     neutron.tests.unit.notifiers.test_batch_notifier \
-    neutron.tests.unit.api.test_extensions
+    neutron.tests.unit.api.test_extensions \
+    neutron.tests.unit.db.test_db_base_plugin_common
 
 [flake8]
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