diff --git a/src/main.cpp b/src/main.cpp
index 46736ee..af3bb07 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -31,11 +31,15 @@ int main(int argc, char *argv[]) {
 	} else if (argc == 2) {
 		mesh_processor = new MeshProcessor(argv[1]);
 	}
-	// QObject::connect(&main_window, &MainWindow::open,
-	// 				 [&](const QString &path) {
-	// 					 if (mesh_processor) delete mesh_processor;
-	// 					 mesh_processor = new MeshProcessor(path);
-	// 				 });
+	QObject::connect(&main_window, &MainWindow::open,
+					 [&](const QString &path) {
+						 if (mesh_processor) {
+							 mesh_viewer->removeMesh(mesh_processor->mesh);
+							 delete mesh_processor;
+						 }
+						 mesh_processor = new MeshProcessor(path);
+						 mesh_viewer->addMesh(mesh_processor->mesh);
+					 });
 	main_window.show();
 	return app.exec();
 }
diff --git a/src/main_window.cpp b/src/main_window.cpp
index cb4c4bf..ff8c68e 100644
--- a/src/main_window.cpp
+++ b/src/main_window.cpp
@@ -7,9 +7,11 @@
 
 MainWindow::MainWindow(QWidget *parent)
 	:QMainWindow(parent),
-	 mesh_viewer(this),
-	 toolbar(this) {
-	connect(&mesh_viewer, &MeshViewer::initialized, this, &MainWindow::meshViewerInitialized);
+	 toolbar(this),
+	 mesh_viewer(this) {
+	connect(&mesh_viewer, &MeshViewer::initialized, [&]() {
+		open_action->setEnabled(true);
+	});
 	setCentralWidget(&mesh_viewer);
 	addToolBar(Qt::RightToolBarArea, &toolbar);
 	open_action = toolbar.addAction("Ouvrir…", [&](){
@@ -31,8 +33,3 @@ MainWindow::MainWindow(QWidget *parent)
 		a->setEnabled(false);
 	}
 }
-
-
-void MainWindow::meshViewerInitialized() {
-	open_action->setEnabled(true);
-}
diff --git a/src/main_window.h b/src/main_window.h
index e1b8666..62a3a9e 100644
--- a/src/main_window.h
+++ b/src/main_window.h
@@ -15,9 +15,6 @@ class MainWindow : public QMainWindow {
 	QAction *open_action;
 	QList<QAction *> toolbar_actions;
 
-private slots:
-	void meshViewerInitialized();
-
 signals:
 	void open(const QString &path);