diff --git a/torba/tests/client_tests/integration/test_network.py b/torba/tests/client_tests/integration/test_network.py
index eec697199..f607c3c09 100644
--- a/torba/tests/client_tests/integration/test_network.py
+++ b/torba/tests/client_tests/integration/test_network.py
@@ -115,6 +115,13 @@ class ReconnectTests(IntegrationTestCase):
         await self.ledger.network.on_connected.first
         self.assertTrue(self.ledger.network.is_connected)
 
+    async def test_online_but_still_unavailable(self):
+        # Edge case. See issue #2445 for context
+        self.assertIsNotNone(self.ledger.network.session_pool.fastest_session)
+        for session in self.ledger.network.session_pool.sessions:
+            session.response_time = None
+        self.assertIsNone(self.ledger.network.session_pool.fastest_session)
+
 
 class ServerPickingTestCase(AsyncioTestCase):
 
diff --git a/torba/torba/client/basenetwork.py b/torba/torba/client/basenetwork.py
index bcb8d86b1..7b5cee4a4 100644
--- a/torba/torba/client/basenetwork.py
+++ b/torba/torba/client/basenetwork.py
@@ -185,6 +185,9 @@ class BaseNetwork:
     async def start(self):
         self.running = True
         self._switch_task = asyncio.ensure_future(self.switch_forever())
+        # this may become unnecessary when there are no more bugs found,
+        # but for now it helps understanding log reports
+        self._switch_task.add_done_callback(lambda _: log.info("Wallet client switching task stopped."))
         self.session_pool.start(self.config['default_servers'])
         self.on_header.listen(self._update_remote_height)
 
@@ -284,7 +287,7 @@ class SessionPool:
             return None
         return min(
             [((session.response_time + session.connection_latency) * (session.pending_amount + 1), session)
-             for session in self.available_sessions],
+             for session in self.available_sessions] or [(0, None)],
             key=itemgetter(0)
         )[1]