diff --git a/tests/test_reference_runs/test_pre_deployment.py b/tests/test_reference_runs/test_pre_deployment.py
index a04be816ef2c7eee6b8b071bb12ab82062917340..8d8f0b7f1a2bbb03a37b7b74c89e5ba3e57174a7 100644
--- a/tests/test_reference_runs/test_pre_deployment.py
+++ b/tests/test_reference_runs/test_pre_deployment.py
@@ -113,7 +113,8 @@ def validate_constant_file(
     return result, test_file
 
 
-def parse_config(cmd: List[str], config: Dict[str, Any], out_folder: str) -> List[str]:
+def parse_config(cmd: List[str], config: Dict[str, Any],
+                 out_folder: str) -> List[str]:
     """Convert a dictionary to a list of arguments.
 
     Values that are not strings will be cast.
@@ -210,7 +211,8 @@ def test_xfel_calibrate(
     cal_conf["report-to"] = report_name
 
     out_folder = pathlib.Path(
-        cal_conf["out-folder"].format(out_dir_base, cal_conf["karabo-id"], test_key)
+        cal_conf["out-folder"].format(out_dir_base,
+                                      cal_conf["karabo-id"], test_key)
     )
     cmd = parse_config(cmd, cal_conf, out_folder)
 
@@ -279,7 +281,8 @@ def test_xfel_calibrate(
     if cal_type.lower() == "correct":
         with multiprocessing.Pool() as pool:
             result = pool.starmap(
-                validate_h5files, zip(h5files, len(h5files) * [reference_folder])
+                validate_h5files, zip(
+                    h5files, len(h5files) * [reference_folder])
             )
     else:  # "dark"
         validate_files = partial(