diff --git a/src/charm.py b/src/charm.py
index 50dbf79c..ff2d221c 100755
--- a/src/charm.py
+++ b/src/charm.py
@@ -537,6 +537,7 @@ def _apply_network_policies(self, event: HookEvent) -> None:
                 [
                     ("admin", [self.admin_ingress.relation]),
                     ("public", [self.public_ingress.relation]),
+                    (),
                 ]
             )
         except NetworkPoliciesHandlerError:
diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
index 9637d261..b9673490 100644
--- a/tests/integration/conftest.py
+++ b/tests/integration/conftest.py
@@ -1,7 +1,10 @@
+#!/usr/bin/env python3
+# Copyright 2022 Canonical Ltd.
+
 import os
 
-from lightkube import Client, KubeConfig
 import pytest
+from lightkube import Client, KubeConfig
 
 KUBECONFIG = os.environ.get("TESTING_KUBECONFIG", "~/.kube/config")
 
diff --git a/tests/integration/test_charm.py b/tests/integration/test_charm.py
index 49276413..72869465 100644
--- a/tests/integration/test_charm.py
+++ b/tests/integration/test_charm.py
@@ -9,9 +9,9 @@
 import pytest
 import requests
 import yaml
-from pytest_operator.plugin import OpsTest
 from lightkube import Client
 from lightkube.resources.networking_v1 import NetworkPolicy
+from pytest_operator.plugin import OpsTest
 
 logger = logging.getLogger(__name__)