diff --git a/src/meshlab/mainwindow_RunTime.cpp b/src/meshlab/mainwindow_RunTime.cpp
index 7e09ed929..419f35898 100644
--- a/src/meshlab/mainwindow_RunTime.cpp
+++ b/src/meshlab/mainwindow_RunTime.cpp
@@ -1811,7 +1811,10 @@ void MainWindow::newProject(const QString& projName)
 {
 	if (gpumeminfo == NULL)
 		return;
-	MultiViewer_Container *mvcont = new MultiViewer_Container(*gpumeminfo,mwsettings.highprecision,mwsettings.perbatchprimitives,mwsettings.minpolygonpersmoothrendering,mdiarea);
+
+        // The parent of mvcont is set to null, because mdiarea->addSubWindow
+        // will put it into a QMDISubWindow that will take ownership
+	MultiViewer_Container *mvcont = new MultiViewer_Container(*gpumeminfo,mwsettings.highprecision,mwsettings.perbatchprimitives,mwsettings.minpolygonpersmoothrendering,nullptr);
 	connect(&mvcont->meshDoc,SIGNAL(meshAdded(int)),this,SLOT(meshAdded(int)));
 	connect(&mvcont->meshDoc,SIGNAL(meshRemoved(int)),this,SLOT(meshRemoved(int)));
 	connect(&mvcont->meshDoc, SIGNAL(documentUpdated()), this, SLOT(documentUpdateRequested()));
diff --git a/src/meshlab/multiViewer_Container.cpp b/src/meshlab/multiViewer_Container.cpp
index a5aeafcee..acdc79621 100644
--- a/src/meshlab/multiViewer_Container.cpp
+++ b/src/meshlab/multiViewer_Container.cpp
@@ -80,7 +80,7 @@ MultiViewer_Container::~MultiViewer_Container()
 	
     //WARNING!!!! Here just the pointer to the MLSceneGLSharedDataContext is destroyed.
     // The data contained in the GPU gets deallocated in the closeEvent function.
-    delete scenecontext;
+    scenecontext->deleteLater();
 }
 
 int MultiViewer_Container::getNextViewerId(){