diff --git a/Fwk/AppFwk/cafUserInterface/cafPdmUiListEditor.cpp b/Fwk/AppFwk/cafUserInterface/cafPdmUiListEditor.cpp
index 75865cac22..b9869b89d0 100644
--- a/Fwk/AppFwk/cafUserInterface/cafPdmUiListEditor.cpp
+++ b/Fwk/AppFwk/cafUserInterface/cafPdmUiListEditor.cpp
@@ -422,6 +422,10 @@ void PdmUiListEditor::pasteFromString(const QString& content)
 //--------------------------------------------------------------------------------------------------
 bool PdmUiListEditor::eventFilter(QObject* object, QEvent * event)
 {
+    if (!m_listView)
+    {
+        return false;
+    }
     if (object == m_listView->viewport() && event->type() == QEvent::MouseMove)
     {
         QMouseEvent* mouseEvent = dynamic_cast<QMouseEvent*>(event);