diff --git a/src/webui/service/device/routes.py b/src/webui/service/device/routes.py
index 1bb5d26fcc35698206764946a8922678438cdeea..f1423e92ed63fa778448978167c1c8e646414885 100644
--- a/src/webui/service/device/routes.py
+++ b/src/webui/service/device/routes.py
@@ -125,8 +125,8 @@ def delete(device_uuid):
         response = device_client.DeleteDevice(request)
         device_client.close()
 
-        flash('Device "{:s}" deleted successfully!'.format(device_uuid), 'success')
+        flash(f'Device "{device_uuid}" deleted successfully!', 'success')
     except Exception as e:
-        flash('Problem deleting device "{:s}": {:s}'.format(device_uuid, str(e.details())), 'danger')
+        flash(f'Problem deleting device "{device_uuid}": {e.details()}', 'danger')
         current_app.logger.exception(e)
     return redirect(url_for('device.home'))
diff --git a/src/webui/tests/test_unitary.py b/src/webui/tests/test_unitary.py
index e1afe79e61b19b4ca5a846e1ecb9df90e5ce4099..3062d81746a8de2a37ea1e489b07b98ddebb792b 100644
--- a/src/webui/tests/test_unitary.py
+++ b/src/webui/tests/test_unitary.py
@@ -59,7 +59,7 @@ class TestWebUI(ClientTestCase):
         mock.patch.stopall()
         return super().tearDown(client)
 
-    def test_routes(self, client):
+    def test_routes(self, _) -> None:
         with self.app.app_context():
             url_for('main.home')
             url_for('service.home')
@@ -70,7 +70,7 @@ class TestWebUI(ClientTestCase):
             url_for('js.topology_js')
             url_for('js.site_js')
 
-    def test_device_add_action_success(self, client):
+    def test_device_add_action_success(self, client) -> None:
         with client.session_transaction() as sess:
             sess['context_uuid'] = 'admin'
         DEVICE_EMU = {
@@ -96,11 +96,9 @@ class TestWebUI(ClientTestCase):
     def test_service_up(self, client):
         pass
 
-
-
-# def test_service_up(client):
-#     rw = client.get('/')
-#     assert rw.status_code == 200, 'Service is not up!'
+    def test_service_up(client):
+        rw = client.get('/')
+        assert rw.status_code == 200, 'Service is not up!'
 
 # def test_home_page(client):
 #     rw = client.get('/')