diff --git a/bec_widgets/qt_utils/widget_IO.py b/bec_widgets/qt_utils/widget_io.py
similarity index 99%
rename from bec_widgets/qt_utils/widget_IO.py
rename to bec_widgets/qt_utils/widget_io.py
index 9ed8e7c5..c2dbb48b 100644
--- a/bec_widgets/qt_utils/widget_IO.py
+++ b/bec_widgets/qt_utils/widget_io.py
@@ -212,7 +212,7 @@ class WidgetHierarchy:
 
 
 # Example application to demonstrate the usage of the functions
-if __name__ == "__main__":
+if __name__ == "__main__":  # pragma: no cover
     app = QApplication([])
 
     # Create instance of WidgetHierarchy
diff --git a/tests/test_widget_io.py b/tests/test_widget_io.py
index 7f40eecb..c6b822d7 100644
--- a/tests/test_widget_io.py
+++ b/tests/test_widget_io.py
@@ -8,7 +8,7 @@ from PyQt5.QtWidgets import (
     QSpinBox,
 )
 
-from bec_widgets.qt_utils.widget_IO import WidgetHierarchy
+from bec_widgets.qt_utils.widget_io import WidgetHierarchy
 
 
 @pytest.fixture(scope="function")