diff --git a/tests/unit_tests/test_stitching.py b/tests/unit_tests/test_stitching.py
index ca5b9a08..ead2276b 100644
--- a/tests/unit_tests/test_stitching.py
+++ b/tests/unit_tests/test_stitching.py
@@ -51,7 +51,8 @@ def test_validate_command_forbidden(cmd_name):
 
     # As an argument (case-insensitive)
     with pytest.raises(
-        StitcherValidationError, match=f"Forbidden element '{cmd_name.upper()}' detected"
+        StitcherValidationError,
+        match=f"Forbidden element '{cmd_name.upper()}' detected",
     ):
         validate_command(["safe-command", cmd_name.upper()])
 
diff --git a/tests/unit_tests/test_utilities.py b/tests/unit_tests/test_utilities.py
index dc8e3ae1..bd7f4ce3 100644
--- a/tests/unit_tests/test_utilities.py
+++ b/tests/unit_tests/test_utilities.py
@@ -12,7 +12,6 @@ from openflexure_microscope_server.utilities import (
 
 
 def test_make_name_safe_basic():
-
     """Test basic functionality of make_name_safe."""
     assert make_name_safe("normal_name") == "normal_name"
     assert make_name_safe("name with spaces") == "name_with_spaces"