diff --git a/bec_widgets/widgets/services/beamline_states/beamline_state_pill.py b/bec_widgets/widgets/services/beamline_states/beamline_state_pill.py
index 50a025f8..3c181186 100644
--- a/bec_widgets/widgets/services/beamline_states/beamline_state_pill.py
+++ b/bec_widgets/widgets/services/beamline_states/beamline_state_pill.py
@@ -248,6 +248,9 @@ class BeamlineStatePill(BECWidget, QWidget):
         self.set_state_name(state_name, title=title)
 
     def eventFilter(self, watched: object, event: QEvent) -> bool:  # noqa: N802
+        if not isinstance(event, QEvent):
+            return False
+
         hover_widgets = set(self._hover_widgets())
         draggable_widgets = {
             self._header,
diff --git a/tests/unit_tests/test_beamline_state_pill.py b/tests/unit_tests/test_beamline_state_pill.py
index 524b4f79..c5ce229d 100644
--- a/tests/unit_tests/test_beamline_state_pill.py
+++ b/tests/unit_tests/test_beamline_state_pill.py
@@ -3,6 +3,7 @@ import json
 import shiboken6
 from bec_lib import messages
 from qtpy.QtCore import QCoreApplication, QEvent, Qt
+from qtpy.QtGui import QStandardItem
 from qtpy.QtWidgets import QMessageBox, QSizePolicy
 
 from bec_widgets.utils.toolbars.toolbar import ModularToolBar
@@ -129,6 +130,13 @@ def test_beamline_state_pill_uses_card_style_when_hovered(qtbot, mocked_client):
     assert widget._shadow.isEnabled()
 
 
+def test_beamline_state_pill_event_filter_ignores_non_qevent(qtbot, mocked_client):
+    widget = BeamlineStatePill(state_name="limits", title="Limits", client=mocked_client)
+    qtbot.addWidget(widget)
+
+    assert widget.eventFilter(widget._title_edit, QStandardItem("not an event")) is False
+
+
 def test_beamline_state_pill_drag_payload_modes(qtbot, mocked_client):
     widget = BeamlineStatePill(state_name="limits", title="Limits", client=mocked_client)
     qtbot.addWidget(widget)