diff --git a/neutron/extensions/securitygroup.py b/neutron/extensions/securitygroup.py
index a772be5692f..cff13351b27 100644
--- a/neutron/extensions/securitygroup.py
+++ b/neutron/extensions/securitygroup.py
@@ -326,8 +326,8 @@ class Securitygroup(extensions.ExtensionDescriptor):
 
     def get_extended_resources(self, version):
         if version == "2.0":
-            return dict(EXTENDED_ATTRIBUTES_2_0.items() +
-                        RESOURCE_ATTRIBUTE_MAP.items())
+            return dict(list(EXTENDED_ATTRIBUTES_2_0.items()) +
+                        list(RESOURCE_ATTRIBUTE_MAP.items()))
         else:
             return {}
 
diff --git a/neutron/tests/unit/agent/linux/test_iptables_firewall.py b/neutron/tests/unit/agent/linux/test_iptables_firewall.py
index 7491d5a8740..c2619add2e6 100644
--- a/neutron/tests/unit/agent/linux/test_iptables_firewall.py
+++ b/neutron/tests/unit/agent/linux/test_iptables_firewall.py
@@ -1672,7 +1672,7 @@ class IptablesFirewallEnhancedIpsetTestCase(BaseIptablesFirewallTestCase):
         rules = self.firewall._expand_sg_rule_with_remote_ips(
             rule, port, 'ingress')
         self.assertEqual(list(rules),
-                         [dict(rule.items() +
+                         [dict(list(rule.items()) +
                                [('source_ip_prefix', '%s/32' % ip)])
                           for ip in other_ips])