diff --git a/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp b/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp
index ca7d891dc77..a405db0795e 100644
--- a/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp
+++ b/GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp
@@ -162,9 +162,6 @@ MainWindow::MainWindow()
   this->graphicsView->setScene(&scene);
   this->graphicsView->setMouseTracking(true);
 
-  // Uncomment the following line to get antialiasing by default.
-//   actionUse_Antialiasing->setChecked(true);
-
   // Turn the vertical axis upside down
   this->graphicsView->matrix().scale(1, -1);
                                                       
diff --git a/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp b/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp
index 6f207112ee1..96191ff7247 100644
--- a/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp
+++ b/GraphicsView/demo/Triangulation_2/Delaunay_triangulation_2.cpp
@@ -145,9 +145,6 @@ MainWindow::MainWindow()
   this->graphicsView->setScene(&scene);
   this->graphicsView->setMouseTracking(true);
 
-  // Uncomment the following line to get antialiasing by default.
-//   actionUse_Antialiasing->setChecked(true);
-
   // Turn the vertical axis upside down
   this->graphicsView->matrix().scale(1, -1);
                                                       
diff --git a/GraphicsView/src/CGALQt4/DemosMainWindow.cpp b/GraphicsView/src/CGALQt4/DemosMainWindow.cpp
index 56d143036fc..04337cd6691 100644
--- a/GraphicsView/src/CGALQt4/DemosMainWindow.cpp
+++ b/GraphicsView/src/CGALQt4/DemosMainWindow.cpp
@@ -91,6 +91,7 @@ DemosMainWindow::setupOptionsMenu(QMenu* menuOptions)
           this, SLOT(setUseAntialiasing(bool)));
   connect(actionUse_OpenGL, SIGNAL(toggled(bool)),
           this, SLOT(setUseOpenGL(bool)));
+  actionUse_Antialiasing->setChecked(true);
 }
 
 void