diff --git a/oslo_db/tests/fixtures.py b/oslo_db/tests/fixtures.py
index 46462782d43752742e093d67d97e316e7a14d1d4..468dcaec7fa8ade075f8aeb1a302fbb956d61136 100644
--- a/oslo_db/tests/fixtures.py
+++ b/oslo_db/tests/fixtures.py
@@ -45,11 +45,6 @@ class WarningsFixture(fixtures.Fixture):
             message=r'The Session.autocommit parameter is deprecated .*',
             category=sqla_exc.SADeprecationWarning)
 
-        warnings.filterwarnings(
-            'once',
-            message=r'Calling \.begin\(\) when a transaction is already .*',
-            category=sqla_exc.SADeprecationWarning)
-
         # ...plus things that aren't our fault
 
         # FIXME(stephenfin): These are caused by sqlalchemy-migrate, not us,
diff --git a/oslo_db/tests/sqlalchemy/test_utils.py b/oslo_db/tests/sqlalchemy/test_utils.py
index 087f7ec1a78924f4ff89543196448511217d6056..27ed6409bb95d1a7d3b3580c8b63695c0bc1c618 100644
--- a/oslo_db/tests/sqlalchemy/test_utils.py
+++ b/oslo_db/tests/sqlalchemy/test_utils.py
@@ -700,8 +700,7 @@ class TestMigrationUtils(db_test_base._DbTestCase):
 
         test_table.create(engine)
         with engine.connect() as conn, conn.begin():
-            with conn.begin():
-                conn.execute(test_table.insert(), values)
+            conn.execute(test_table.insert(), values)
         return test_table, values
 
     def test_drop_old_duplicate_entries_from_table(self):