diff --git a/bec_widgets/applications/views/device_manager_view/device_manager_dialogs/device_form_dialog.py b/bec_widgets/applications/views/device_manager_view/device_manager_dialogs/device_form_dialog.py
index fa38d354..1f4b574f 100644
--- a/bec_widgets/applications/views/device_manager_view/device_manager_dialogs/device_form_dialog.py
+++ b/bec_widgets/applications/views/device_manager_view/device_manager_dialogs/device_form_dialog.py
@@ -6,7 +6,6 @@ from bec_lib.atlas_models import Device as DeviceModel
 from bec_lib.logger import bec_logger
 from ophyd_devices.interfaces.device_config_templates.ophyd_templates import OPHYD_DEVICE_TEMPLATES
 from qtpy import QtCore, QtWidgets
-from zmq.devices import Device
 
 from bec_widgets.utils.error_popups import SafeSlot
 from bec_widgets.widgets.control.device_manager.components import OphydValidation
diff --git a/bec_widgets/utils/bec_widget.py b/bec_widgets/utils/bec_widget.py
index bb48b527..e091e0a2 100644
--- a/bec_widgets/utils/bec_widget.py
+++ b/bec_widgets/utils/bec_widget.py
@@ -165,7 +165,7 @@ class BECWidget(BECConnector):
         overlay = getattr(self, "_busy_overlay", None)
         if overlay is None:
 
-            overlay = install_busy_loader(self, start_loading=False)
+            overlay = install_busy_loader(target=self, start_loading=False)
             self._busy_overlay = overlay
 
         # Create and set the busy state widget
diff --git a/bec_widgets/utils/busy_loader.py b/bec_widgets/utils/busy_loader.py
index c88195f7..9784c6ce 100644
--- a/bec_widgets/utils/busy_loader.py
+++ b/bec_widgets/utils/busy_loader.py
@@ -29,7 +29,7 @@ class _OverlayEventFilter(QObject):
         self._overlay = overlay
 
     def eventFilter(self, obj, event):
-        if not hasattr(self, " _target") or self._target is None:
+        if not hasattr(self, "_target") or self._target is None:
             return False
         if not hasattr(self, "_overlay") or self._overlay is None:
             return False
@@ -252,7 +252,7 @@ def install_busy_loader(
     """
     overlay = BusyLoaderOverlay(parent=target, opacity=opacity)
     overlay.setGeometry(target.rect())
-    overlay.set_filter(_OverlayEventFilter(target, overlay))
+    overlay.set_filter(_OverlayEventFilter(target=target, overlay=overlay))
     if start_loading:
         overlay.show()
     return overlay