diff --git a/tests/test_connection.py b/tests/test_connection.py
index 2a8ce0c..72c6a82 100644
--- a/tests/test_connection.py
+++ b/tests/test_connection.py
@@ -65,7 +65,7 @@ async def test_server_side_close():
     """
 
     with pytest.raises(UnexpectedCloseError):
-        async with open_connection("127.0.0.1") as conn:
+        async with _open_connection() as conn:
             async with conn.open_channel() as channel:
                 # immediate causes a close with rabbitmq
                 await channel.basic_publish("", "", b"", immediate=True)