diff --git a/src/Gui/MDIView.cpp b/src/Gui/MDIView.cpp
index 9bf3cb0d5..56c5dae1f 100644
--- a/src/Gui/MDIView.cpp
+++ b/src/Gui/MDIView.cpp
@@ -84,6 +84,10 @@ void MDIView::deleteSelf()
         parent->deleteLater();
     else
         this->deleteLater();
+
+    // detach from document
+    if (_pcDocument)
+        onClose();
     _pcDocument = 0;
 }