diff --git a/GraphicsView/demo/Periodic_2_triangulation_2/Periodic_2_Delaunay_triangulation_2.cpp b/GraphicsView/demo/Periodic_2_triangulation_2/Periodic_2_Delaunay_triangulation_2.cpp
index 191c7f20181..be52bcb4596 100644
--- a/GraphicsView/demo/Periodic_2_triangulation_2/Periodic_2_Delaunay_triangulation_2.cpp
+++ b/GraphicsView/demo/Periodic_2_triangulation_2/Periodic_2_Delaunay_triangulation_2.cpp
@@ -126,7 +126,6 @@ MainWindow::MainWindow()
   // and the input they generate is passed to the triangulation with 
   // the signal/slot mechanism    
   pt_pi = new CGAL::Qt::TriangulationPointInputAndConflictZone<Periodic_DT>(&scene, &triang, this );
-  
   QObject::connect(pt_pi, SIGNAL(generate(CGAL::Object)),
 		   this, SLOT(processInput(CGAL::Object)));
   
@@ -146,6 +145,7 @@ MainWindow::MainWindow()
 		   this, SIGNAL(changed()));
 
   pt_cc = new CGAL::Qt::TriangulationCircumcircle<Periodic_DT>(&scene, &triang, this);
+  pt_cc ->setPen(QPen(::Qt::black, .01));
   QObject::connect(pt_cc, SIGNAL(modelChanged()),
 		   this, SIGNAL(changed()));
   
diff --git a/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationConflictZone.h b/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationConflictZone.h
index ed61883a6e4..be48917b863 100644
--- a/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationConflictZone.h
+++ b/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationConflictZone.h
@@ -3,6 +3,7 @@
 
 #include <CGAL/Qt/GraphicsViewInput.h>
 #include <CGAL/Qt/Converter.h>
+#include <QGraphicsPolygonItem>
 #include <QGraphicsSceneMouseEvent>
 #include <QEvent>
 #include <list>
@@ -81,9 +82,10 @@ TriangulationConflictZone<T>::localize_and_insert_point(QPointF qt_point)
       ++it){
     if(! m_tr->is_infinite(*it)){
       QGraphicsPolygonItem *item = new QGraphicsPolygonItem(m_convert(m_tr->triangle(*it)));
-      QColor color(::Qt::blue);
+      QColor color = ::Qt::blue;
       color.setAlpha(150);
-      item->setBrush(color);
+      item->setBrush(QBrush(color));
+      item->setPen(QPen(::Qt::black, .01));
       m_scene->addItem(item);
       qfaces.push_back(item);
     }
diff --git a/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationPointInputAndConflictZone.h b/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationPointInputAndConflictZone.h
index b7e3f8dcaaf..529bee81f89 100644
--- a/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationPointInputAndConflictZone.h
+++ b/GraphicsView/demo/Periodic_2_triangulation_2/TriangulationPointInputAndConflictZone.h
@@ -5,6 +5,7 @@
 #include <CGAL/Qt/GraphicsViewInput.h>
 #include <CGAL/Qt/Converter.h>
 #include <QGraphicsSceneMouseEvent>
+#include <QGraphicsPolygonItem>
 #include <QEvent>
 #include <list>
 
@@ -71,9 +72,10 @@ TriangulationPointInputAndConflictZone<T>::mousePressEvent(QGraphicsSceneMouseEv
       it != faces.end();
       ++it) {
       QGraphicsPolygonItem *item = new QGraphicsPolygonItem(convert(dt->triangle(*it)));
-      QColor color(::Qt::blue);
+      QColor color = ::Qt::blue;
       color.setAlpha(150);
-      item->setBrush(color);
+      item->setBrush(QBrush(color));
+      item->setPen(QPen(::Qt::black, .01));
       scene_->addItem(item);
       qfaces.push_back(item);
   }
diff --git a/GraphicsView/demo/Periodic_2_triangulation_2/include/CGAL/Qt/PeriodicTriangulationGraphicsItem.h b/GraphicsView/demo/Periodic_2_triangulation_2/include/CGAL/Qt/PeriodicTriangulationGraphicsItem.h
index 1c135993c88..5c2648a5284 100644
--- a/GraphicsView/demo/Periodic_2_triangulation_2/include/CGAL/Qt/PeriodicTriangulationGraphicsItem.h
+++ b/GraphicsView/demo/Periodic_2_triangulation_2/include/CGAL/Qt/PeriodicTriangulationGraphicsItem.h
@@ -154,9 +154,10 @@ namespace CGAL {
        visible_edges(true), visible_vertices(true),
        type(NONE)
     {
-      setVerticesPen(QPen(::Qt::red, 1.));
+      setVerticesPen(QPen(::Qt::red, 1.));      
       setFacesPen(QPen(QColor(100,100,100)));
       setDomainPen(QPen(::Qt::blue, .01));
+      setEdgesPen(QPen(::Qt::black, .01));
       if(t->number_of_vertices() == 0){
         this->hide();
       }