diff --git a/vmware_nsx/plugins/nsx_p/plugin.py b/vmware_nsx/plugins/nsx_p/plugin.py
index 66b53400be..fea9b07ccf 100644
--- a/vmware_nsx/plugins/nsx_p/plugin.py
+++ b/vmware_nsx/plugins/nsx_p/plugin.py
@@ -3656,6 +3656,8 @@ class NsxPolicyPlugin(nsx_plugin_common.NsxPluginV3Base):
                     tz)
                 return type == nsxlib_consts.TRANSPORT_TYPE_OVERLAY
 
+        return False
+
     def _is_ens_tz(self, tz_id):
         # This call is cached on the nsxlib side
         mode = self.nsxpolicy.transport_zone.get_host_switch_mode(tz_id)