diff --git a/src/Mod/Part/Gui/DlgFilletEdges.cpp b/src/Mod/Part/Gui/DlgFilletEdges.cpp
index c1a04411d2..5513470ae8 100644
--- a/src/Mod/Part/Gui/DlgFilletEdges.cpp
+++ b/src/Mod/Part/Gui/DlgFilletEdges.cpp
@@ -793,10 +793,12 @@ void DlgFilletEdges::on_selectAllButton_clicked()
     model->blockSignals(block);
     model->updateCheckStates();
 
-    App::Document* doc = d->object->getDocument();
-    Gui::Selection().addSelection(doc->getName(),
-        d->object->getNameInDocument(),
-        subElements);
+    if (d->object) {
+        App::Document* doc = d->object->getDocument();
+        Gui::Selection().addSelection(doc->getName(),
+            d->object->getNameInDocument(),
+            subElements);
+    }
 }
 
 void DlgFilletEdges::on_selectNoneButton_clicked()
@@ -811,8 +813,10 @@ void DlgFilletEdges::on_selectNoneButton_clicked()
     model->blockSignals(block);
     model->updateCheckStates();
 
-    App::Document* doc = d->object->getDocument();
-    Gui::Selection().clearSelection(doc->getName());
+    if (d->object) {
+        App::Document* doc = d->object->getDocument();
+        Gui::Selection().clearSelection(doc->getName());
+    }
 }
 
 void DlgFilletEdges::on_filletType_activated(int index)