diff --git a/bec_widgets/widgets/containers/main_window/addons/notification_center/notification_banner.py b/bec_widgets/widgets/containers/main_window/addons/notification_center/notification_banner.py
index 057a2cfa..e48d2f04 100644
--- a/bec_widgets/widgets/containers/main_window/addons/notification_center/notification_banner.py
+++ b/bec_widgets/widgets/containers/main_window/addons/notification_center/notification_banner.py
@@ -908,6 +908,8 @@ class NotificationCentre(QScrollArea):
         self.setFixedHeight(min(content_h, avail))
 
     def eventFilter(self, watched, event):
+        if not isinstance(event, QtCore.QEvent):
+            return False
         if watched is self.parent() and event.type() == QtCore.QEvent.Resize:
             self._adjust_height()
         return super().eventFilter(watched, event)
diff --git a/tests/unit_tests/test_notifications.py b/tests/unit_tests/test_notifications.py
index 2707b29f..2022e4c1 100644
--- a/tests/unit_tests/test_notifications.py
+++ b/tests/unit_tests/test_notifications.py
@@ -281,6 +281,10 @@ def test_centre_updates_from_qapp_theme_changed_signal(qtbot, centre):
     assert LIGHT_PALETTE["title"] in toast._title_lbl.styleSheet()
 
 
+def test_centre_event_filter_ignores_non_qevent(centre):
+    assert centre.eventFilter(centre.parent(), QtGui.QStandardItem()) is False
+
+
 # ------------------------------------------------------------------------
 # NotificationIndicator tests
 # ------------------------------------------------------------------------