2 files changed, 5 insertions, 4 deletions
diff --git a/tests/storage/databases/main/test_lock.py b/tests/storage/databases/main/test_lock.py
index 3ac4646969..74c6224eb6 100644
--- a/tests/storage/databases/main/test_lock.py
+++ b/tests/storage/databases/main/test_lock.py
@@ -28,7 +28,7 @@ class LockTestCase(unittest.HomeserverTestCase):
         """
         # First to acquire this lock, so it should complete
         lock = self.get_success(self.store.try_acquire_lock("name", "key"))
-        self.assertIsNotNone(lock)
+        assert lock is not None
 
         # Enter the context manager
         self.get_success(lock.__aenter__())
@@ -45,7 +45,7 @@ class LockTestCase(unittest.HomeserverTestCase):
 
         # We can now acquire the lock again.
         lock3 = self.get_success(self.store.try_acquire_lock("name", "key"))
-        self.assertIsNotNone(lock3)
+        assert lock3 is not None
         self.get_success(lock3.__aenter__())
         self.get_success(lock3.__aexit__(None, None, None))
 
@@ -53,7 +53,7 @@ class LockTestCase(unittest.HomeserverTestCase):
         """Test that we don't time out locks while they're still active"""
 
         lock = self.get_success(self.store.try_acquire_lock("name", "key"))
-        self.assertIsNotNone(lock)
+        assert lock is not None
 
         self.get_success(lock.__aenter__())
 
@@ -69,7 +69,7 @@ class LockTestCase(unittest.HomeserverTestCase):
         """Test that we time out locks if they're not updated for ages"""
 
         lock = self.get_success(self.store.try_acquire_lock("name", "key"))
-        self.assertIsNotNone(lock)
+        assert lock is not None
 
         self.get_success(lock.__aenter__())
 
diff --git a/tests/storage/test_appservice.py b/tests/storage/test_appservice.py
index 08078d38e2..1bf93e79a7 100644
--- a/tests/storage/test_appservice.py
+++ b/tests/storage/test_appservice.py
@@ -358,6 +358,7 @@ class ApplicationServiceTransactionStoreTestCase(unittest.HomeserverTestCase):
         self.get_success(self._insert_txn(service.id, 12, other_events))
 
         txn = self.get_success(self.store.get_oldest_unsent_txn(service))
+        assert txn is not None
         self.assertEqual(service, txn.service)
         self.assertEqual(10, txn.id)
         self.assertEqual(events, txn.events)