diff --git a/GraphicsView/include/CGAL/Qt/AlphaShapeGraphicsItem.h b/GraphicsView/include/CGAL/Qt/AlphaShapeGraphicsItem.h
index 7fad0319670..6debfeb9496 100644
--- a/GraphicsView/include/CGAL/Qt/AlphaShapeGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/AlphaShapeGraphicsItem.h
@@ -277,7 +277,7 @@ AlphaShapeGraphicsItem<T>::paintVertex(typename T::Vertex_handle vh)
 template <typename T>
 void 
 AlphaShapeGraphicsItem<T>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
   painter->setPen(this->edgesPen());
diff --git a/GraphicsView/include/CGAL/Qt/ApolloniusGraphGraphicsItem.h b/GraphicsView/include/CGAL/Qt/ApolloniusGraphGraphicsItem.h
index 3d9d1ee534b..7533d5c1931 100644
--- a/GraphicsView/include/CGAL/Qt/ApolloniusGraphGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/ApolloniusGraphGraphicsItem.h
@@ -99,7 +99,7 @@ ApolloniusGraphGraphicsItem<AG,K>::boundingRect() const
 
 template <typename AG, typename K>
 void 
-ApolloniusGraphGraphicsItem<AG,K>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget */*w*/)
+ApolloniusGraphGraphicsItem<AG,K>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * /*w*/)
 {
 
   painter->setPen(this->sitesPen());
diff --git a/GraphicsView/include/CGAL/Qt/CircularArcGraphicsItem.h b/GraphicsView/include/CGAL/Qt/CircularArcGraphicsItem.h
index f6754ae8061..ad2c95baf61 100644
--- a/GraphicsView/include/CGAL/Qt/CircularArcGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/CircularArcGraphicsItem.h
@@ -123,7 +123,7 @@ CircularArcGraphicsItem<CK>::boundingRect() const
 template <typename CK>
 void 
 CircularArcGraphicsItem<CK>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
   painter->setPen(this->edgesPen());
diff --git a/GraphicsView/include/CGAL/Qt/LineGraphicsItem.h b/GraphicsView/include/CGAL/Qt/LineGraphicsItem.h
index e0aba5d7e7b..c01e7bb16fc 100644
--- a/GraphicsView/include/CGAL/Qt/LineGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/LineGraphicsItem.h
@@ -112,7 +112,7 @@ LineGraphicsItem<CK>::boundingRect() const
 template <typename CK>
 void 
 LineGraphicsItem<CK>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
   painter->setPen(this->Pen());
diff --git a/GraphicsView/include/CGAL/Qt/PointsGraphicsItem.h b/GraphicsView/include/CGAL/Qt/PointsGraphicsItem.h
index 189591b1393..a49ea519356 100644
--- a/GraphicsView/include/CGAL/Qt/PointsGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/PointsGraphicsItem.h
@@ -112,7 +112,7 @@ PointsGraphicsItem<P>::boundingRect() const
 template <typename P>
 void 
 PointsGraphicsItem<P>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
   if(drawVertices()) {
diff --git a/GraphicsView/include/CGAL/Qt/PolygonGraphicsItem.h b/GraphicsView/include/CGAL/Qt/PolygonGraphicsItem.h
index 0b8c47a9dd6..f17b1fda5bf 100644
--- a/GraphicsView/include/CGAL/Qt/PolygonGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/PolygonGraphicsItem.h
@@ -131,7 +131,7 @@ PolygonGraphicsItem<P>::boundingRect() const
 template <typename P>
 void 
 PolygonGraphicsItem<P>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
   painter->setPen(this->edgesPen());
diff --git a/GraphicsView/include/CGAL/Qt/PolygonWithHolesGraphicsItem.h b/GraphicsView/include/CGAL/Qt/PolygonWithHolesGraphicsItem.h
index e6806f5e9fc..8c81797f3c8 100644
--- a/GraphicsView/include/CGAL/Qt/PolygonWithHolesGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/PolygonWithHolesGraphicsItem.h
@@ -135,7 +135,7 @@ PolygonWithHolesGraphicsItem<P>::boundingRect() const
 template <typename P>
 void 
 PolygonWithHolesGraphicsItem<P>::paint(QPainter *painter, 
-				       const QStyleOptionGraphicsItem */*option*/,
+				       const QStyleOptionGraphicsItem * /*option*/,
 				       QWidget * /*widget*/)
 {
   Converter<Traits> convert;
diff --git a/GraphicsView/include/CGAL/Qt/PolylinesGraphicsItem.h b/GraphicsView/include/CGAL/Qt/PolylinesGraphicsItem.h
index 263df5e8738..6cda9b46e1f 100644
--- a/GraphicsView/include/CGAL/Qt/PolylinesGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/PolylinesGraphicsItem.h
@@ -124,7 +124,7 @@ PolylinesGraphicsItem<P>::boundingRect() const
 template <typename P>
 void 
 PolylinesGraphicsItem<P>::paint(QPainter *painter, 
-                                const QStyleOptionGraphicsItem */*option*/,
+                                const QStyleOptionGraphicsItem * /*option*/,
                                 QWidget * /*widget*/)
 {
 
diff --git a/GraphicsView/include/CGAL/Qt/PowerdiagramGraphicsItem.h b/GraphicsView/include/CGAL/Qt/PowerdiagramGraphicsItem.h
index 2d13537b9c4..53e480a03d5 100644
--- a/GraphicsView/include/CGAL/Qt/PowerdiagramGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/PowerdiagramGraphicsItem.h
@@ -99,7 +99,7 @@ PowerdiagramGraphicsItem<RT>::boundingRect() const
 
 template <typename RT>
 void 
-PowerdiagramGraphicsItem<RT>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget */*w*/)
+PowerdiagramGraphicsItem<RT>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * /*w*/)
 {
   QRectF rect = option->exposedRect;
   PainterOstream<K> pos(painter, rect);
diff --git a/GraphicsView/include/CGAL/Qt/RegularGridGraphicsItem.h b/GraphicsView/include/CGAL/Qt/RegularGridGraphicsItem.h
index a8f4ebf84b7..bd06694ce74 100644
--- a/GraphicsView/include/CGAL/Qt/RegularGridGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/RegularGridGraphicsItem.h
@@ -141,7 +141,7 @@ QRectF
   template <typename K>
 void 
   RegularGridGraphicsItem<K>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
   QRectF rect = boundingRect();
diff --git a/GraphicsView/include/CGAL/Qt/RegularGridVectorFieldGraphicsItem.h b/GraphicsView/include/CGAL/Qt/RegularGridVectorFieldGraphicsItem.h
index c064dd82f46..09075b056f2 100644
--- a/GraphicsView/include/CGAL/Qt/RegularGridVectorFieldGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/RegularGridVectorFieldGraphicsItem.h
@@ -136,7 +136,7 @@ QRectF
   template <typename T, typename K>
 void 
   RegularGridVectorFieldGraphicsItem<T,K>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
 
diff --git a/GraphicsView/include/CGAL/Qt/RegularTriangulationGraphicsItem.h b/GraphicsView/include/CGAL/Qt/RegularTriangulationGraphicsItem.h
index 93ebdad90a8..4c3d9337a47 100644
--- a/GraphicsView/include/CGAL/Qt/RegularTriangulationGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/RegularTriangulationGraphicsItem.h
@@ -232,7 +232,7 @@ RegularTriangulationGraphicsItem<T>::paintOneVertex(const typename T::Point& poi
 template <typename T>
 void 
 RegularTriangulationGraphicsItem<T>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
   painter->setPen(this->edgesPen());
diff --git a/GraphicsView/include/CGAL/Qt/SegmentDelaunayGraphGraphicsItem.h b/GraphicsView/include/CGAL/Qt/SegmentDelaunayGraphGraphicsItem.h
index e8ccc4395b8..7578139a9e0 100644
--- a/GraphicsView/include/CGAL/Qt/SegmentDelaunayGraphGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/SegmentDelaunayGraphGraphicsItem.h
@@ -113,7 +113,7 @@ protected:
 
 template <typename T>
 void 
-SegmentDelaunayGraphGraphicsItem<T>::drawDualEdge(QPainter */*painter*/, typename T::Edge e)
+SegmentDelaunayGraphGraphicsItem<T>::drawDualEdge(QPainter * /*painter*/, typename T::Edge e)
 {
    CGAL_precondition( ! t->is_infinite(e) );
 
diff --git a/GraphicsView/include/CGAL/Qt/SegmentsGraphicsItem.h b/GraphicsView/include/CGAL/Qt/SegmentsGraphicsItem.h
index 53799fad451..83bd51bac49 100644
--- a/GraphicsView/include/CGAL/Qt/SegmentsGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/SegmentsGraphicsItem.h
@@ -112,7 +112,7 @@ SegmentsGraphicsItem<P>::boundingRect() const
 template <typename P>
 void 
 SegmentsGraphicsItem<P>::paint(QPainter *painter, 
-                                    const QStyleOptionGraphicsItem */*option*/,
+                                    const QStyleOptionGraphicsItem * /*option*/,
                                     QWidget * /*widget*/)
 {
 
diff --git a/GraphicsView/include/CGAL/Qt/StreamLinesGraphicsItem.h b/GraphicsView/include/CGAL/Qt/StreamLinesGraphicsItem.h
index f754199416f..3727eab0916 100644
--- a/GraphicsView/include/CGAL/Qt/StreamLinesGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/StreamLinesGraphicsItem.h
@@ -95,7 +95,7 @@ StreamLinesGraphicsItem<SL,K>::boundingRect() const
 
 template <typename SL, typename K>
 void 
-StreamLinesGraphicsItem<SL,K>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget */*w*/)
+StreamLinesGraphicsItem<SL,K>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * /*w*/)
 {
   painter->setPen(this->edgesPen());
   QRectF rect = option->exposedRect;
diff --git a/GraphicsView/include/CGAL/Qt/VoronoiGraphicsItem.h b/GraphicsView/include/CGAL/Qt/VoronoiGraphicsItem.h
index 740b38b7309..231af0b6c0f 100644
--- a/GraphicsView/include/CGAL/Qt/VoronoiGraphicsItem.h
+++ b/GraphicsView/include/CGAL/Qt/VoronoiGraphicsItem.h
@@ -91,7 +91,7 @@ VoronoiGraphicsItem<DT>::boundingRect() const
 
 template <typename DT>
 void 
-VoronoiGraphicsItem<DT>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget */*w*/)
+VoronoiGraphicsItem<DT>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * /*w*/)
 {
   QRectF rect = option->exposedRect;
   PainterOstream<typename DT::Geom_traits> pos(painter, rect);