diff --git a/src/Gui/DlgParameterImp.cpp b/src/Gui/DlgParameterImp.cpp
index e60e0e912a..8e8752b406 100644
--- a/src/Gui/DlgParameterImp.cpp
+++ b/src/Gui/DlgParameterImp.cpp
@@ -701,7 +701,7 @@ bool ParameterValue::edit ( const QModelIndex & index, EditTrigger trigger, QEve
 void ParameterValue::contextMenuEvent ( QContextMenuEvent* event )
 {
     QTreeWidgetItem* item = currentItem();
-    if (item->isSelected())
+    if (item && item->isSelected())
         menuEdit->popup(event->globalPos());
     else
         menuNew->popup(event->globalPos());