diff --git a/src/gui/mainwindow.cpp b/src/gui/mainwindow.cpp
index e9d2252..1e63ea8 100644
--- a/src/gui/mainwindow.cpp
+++ b/src/gui/mainwindow.cpp
@@ -43,11 +43,10 @@ MainWindow::MainWindow()
 
     setWindowTitle("KIMA2 - Kasse Nr. " + QSettings().value("global/cashPointNo").toString());
 
-    // Revert this because the application crashes during QApplication::quit
-    //ui_.salesView->header()->setSectionResizeMode(QHeaderView::ResizeToContents);
+    ui_.salesView->header()->setSectionResizeMode(QHeaderView::ResizeToContents);
     setSaleModel();
 
-    connect(ui_.actionQuit, &QAction::triggered, qApp, QApplication::quit);
+    connect(ui_.actionQuit, &QAction::triggered, qApp, QApplication::closeAllWindows, Qt::QueuedConnection);
     connect(ui_.newAction, &QAction::triggered, this, [=]() {
         if (marketplace_->getSellers().size() == 0 && marketplace_->getSales().size() == 0) {
             return;