diff --git a/microbootstrap/instruments/logging_instrument.py b/microbootstrap/instruments/logging_instrument.py
index 3ec1a35..1426aa3 100644
--- a/microbootstrap/instruments/logging_instrument.py
+++ b/microbootstrap/instruments/logging_instrument.py
@@ -100,7 +100,7 @@ def __init__(
         logging_buffer_capacity: int,
         logging_flush_level: int,
         logging_log_level: int,
-        log_stream: typing.Any = None,  # noqa: ANN401
+        log_stream: typing.Any = sys.stdout,  # noqa: ANN401
         **kwargs: typing.Any,  # noqa: ANN401
     ) -> None:
         super().__init__(*args, **kwargs)