diff --git a/src/gudrun_classes/gudrun_file.py b/src/gudrun_classes/gudrun_file.py
index e6c067b42..02e838685 100644
--- a/src/gudrun_classes/gudrun_file.py
+++ b/src/gudrun_classes/gudrun_file.py
@@ -1486,7 +1486,11 @@ def dcs(self, path='', headless=True):
             if hasattr(sys, '_MEIPASS'):
                 gudrun_dcs = os.path.join(sys._MEIPASS, f"gudrun_dcs{SUFFIX}")
             else:
-                gudrun_dcs = resolve(os.path.join(config.__rootdir__, "bin"), f"gudrun_dcs{SUFFIX}")
+                gudrun_dcs = resolve(
+                    os.path.join(
+                        config.__rootdir__, "bin"
+                    ), f"gudrun_dcs{SUFFIX}"
+                )
             if not os.path.exists(gudrun_dcs):
                 return FileNotFoundError()
             else:
diff --git a/src/gudrun_classes/purge_file.py b/src/gudrun_classes/purge_file.py
index 315771fb0..a3e35ca58 100644
--- a/src/gudrun_classes/purge_file.py
+++ b/src/gudrun_classes/purge_file.py
@@ -352,7 +352,11 @@ def purge(
             if hasattr(sys, '_MEIPASS'):
                 purge_det = os.path.join(sys._MEIPASS, f"purge_det{SUFFIX}")
             else:
-                purge_det = resolve(os.path.join(config.__rootdir__, "bin"), f"purge_det{SUFFIX}")
+                purge_det = resolve(
+                    os.path.join(
+                        config.__rootdir__, "bin"
+                    ), f"purge_det{SUFFIX}"
+                )
             if not os.path.exists(purge_det):
                 return FileNotFoundError()
             proc = QProcess()
diff --git a/src/gui/widgets/dialogs/configuration_dialog.py b/src/gui/widgets/dialogs/configuration_dialog.py
index fc67600c5..672c3018c 100644
--- a/src/gui/widgets/dialogs/configuration_dialog.py
+++ b/src/gui/widgets/dialogs/configuration_dialog.py
@@ -5,6 +5,7 @@
 import sys
 from src.gudrun_classes import config
 
+
 class ConfigurationDialog(QDialog):
     """
     Class to represent the ConfigurationDialog. Inherits QDialog.
@@ -64,7 +65,9 @@ def loadConfigurations(self):
         targetDir = (
             os.path.join(sys._MEIPASS, "bin", "configs", "instruments")
             if hasattr(sys, "_MEIPASS")
-            else os.path.join(config.__rootdir__, "bin", "configs", "instruments")
+            else os.path.join(
+                config.__rootdir__, "bin", "configs", "instruments"
+            )
         )
         self.widget.configList.addItems(
             [
@@ -78,7 +81,9 @@ def setConfiguration(self, _prev, _curr):
         targetDir = (
             os.path.join(sys._MEIPASS, "bin", "configs", "instruments")
             if hasattr(sys, "_MEIPASS")
-            else os.path.join(config.__rootdir__, "bin", "configs", "instruments")
+            else os.path.join(
+                config.__rootdir__, "bin", "configs", "instruments"
+            )
         )
         self.configuration = os.path.abspath(
             os.path.join(