diff --git a/Polyhedron/demo/Polyhedron/MainWindow.cpp b/Polyhedron/demo/Polyhedron/MainWindow.cpp
index c6fc884652b..717ef7e4b80 100644
--- a/Polyhedron/demo/Polyhedron/MainWindow.cpp
+++ b/Polyhedron/demo/Polyhedron/MainWindow.cpp
@@ -151,6 +151,9 @@ MainWindow::MainWindow(QWidget* parent)
   connect(scene, SIGNAL(dataChanged(const QModelIndex &, const QModelIndex & )),
           this, SLOT(updateInfo()));
 
+connect(scene, SIGNAL(itemsDestroyed()),
+          this, SLOT(updateInfo()));
+
   
   connect(scene, SIGNAL(dataChanged(const QModelIndex &, const QModelIndex & )),
           this, SLOT(updateDisplayInfo()));
diff --git a/Polyhedron/demo/Polyhedron/Scene.cpp b/Polyhedron/demo/Polyhedron/Scene.cpp
index 8169c09e2c7..54346a8b568 100644
--- a/Polyhedron/demo/Polyhedron/Scene.cpp
+++ b/Polyhedron/demo/Polyhedron/Scene.cpp
@@ -111,6 +111,8 @@ Scene::erase(QList<int> indices)
   emit updated();
   QAbstractListModel::reset();
 
+  emit itemsDestroyed();
+  
   int index = max_index + 1 - indices.size();
   if(index >= 0)
     return index;
diff --git a/Polyhedron/demo/Polyhedron/Scene.h b/Polyhedron/demo/Polyhedron/Scene.h
index a020143068f..0a19fd9ee12 100644
--- a/Polyhedron/demo/Polyhedron/Scene.h
+++ b/Polyhedron/demo/Polyhedron/Scene.h
@@ -130,6 +130,7 @@ signals:
   void updated_bbox();
   void updated();
   void itemAboutToBeDestroyed(Scene_item*);
+  void itemsDestroyed();
   void selectionRay(double, double, double, double, double, double);
 
 private slots: