diff --git a/mpsd-software-environment.py b/mpsd-software-environment.py
index fb6d6b149c5b6ea6e59d83c88c142e02725b0cfc..18fc9ef0fb8c0a525dc55beb9009ba10b84b2e0a 100755
--- a/mpsd-software-environment.py
+++ b/mpsd-software-environment.py
@@ -91,7 +91,7 @@ def read_metadata_from_logfile(logfile: Union[str, Path]) -> dict:
     }
 
 
-def set_up_logging(loglevel="warning", filename="gol.log"):
+def set_up_logging(loglevel="warning", filename=None):
     """Set up logging.
 
     This function sets up the logging configuration for the script.
diff --git a/tests.py b/tests.py
index d0e23c86ab11f6b7f4510ce898ed947b5377b04c..e7043270346b28d7a489cea23e65790df326204f 100644
--- a/tests.py
+++ b/tests.py
@@ -6,15 +6,15 @@ import os
 import shutil
 import subprocess
 from pathlib import Path
-
+import logging
 import pytest
 
 mod = importlib.import_module("mpsd-software-environment")
 
 # set loglevel to debug - useful for understanding problems.
 # (if the tests pass, pytest doesn't show any output)
-# mod.set_up_logging(loglevel="debug", filename="tests.log")
-# logging.debug(f"We have set up logging from {__file__}")
+mod.set_up_logging(loglevel="debug", filename="tests.log")
+logging.debug(f"We have set up logging from {__file__}")
 
 
 def create_mock_git_repository(target_directory, create_directory=True):