diff --git a/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp b/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp
index dd7567e0b8c..6f0cbe10640 100644
--- a/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp
+++ b/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp
@@ -236,11 +236,9 @@ MainWindow::on_actionCircumcenter_toggled(bool checked)
 {
   if(checked){
     scene.installEventFilter(tcc);
-    this->graphicsView->setMouseTracking(true);
     tcc->show();
   } else {  
     scene.removeEventFilter(tcc);
-    this->graphicsView->setMouseTracking(false);
     tcc->hide();
   }
 }
diff --git a/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp b/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp
index 30e7e08e8aa..341b2cb0e57 100644
--- a/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp
+++ b/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp
@@ -209,11 +209,9 @@ MainWindow::on_actionCircumcenter_toggled(bool checked)
 {
   if(checked){
     scene.installEventFilter(tcc);
-    this->graphicsView->setMouseTracking(true);
     tcc->show();
   } else {  
     scene.removeEventFilter(tcc);
-    this->graphicsView->setMouseTracking(false);
     tcc->hide();
   }
 }