diff --git a/src/gui/mainwindow.cpp b/src/gui/mainwindow.cpp
index 2631952..8652de4 100644
--- a/src/gui/mainwindow.cpp
+++ b/src/gui/mainwindow.cpp
@@ -49,7 +49,8 @@ void MainWindow::on_actionEditSeller_triggered()
     auto dialog = std::make_unique<SellerDialog>(this);
     int retCode = dialog->exec();
 
-    delete ui_.salesView->model();
+    auto oldModel = ui_.salesView->model();
+    ui_.salesView->setModel(nullptr);
 
     if (retCode == QDialog::Accepted) {
         marketplace_->sortSellers();
@@ -63,6 +64,7 @@ void MainWindow::on_actionEditSeller_triggered()
     }
 
     ui_.salesView->setModel(new SaleModel(getMarketplace(), ui_.salesView));
+    delete oldModel;
     ui_.salesView->setColumnHidden(2, true);
     ui_.salesView->resizeColumnToContents(0);
     connect(static_cast<BasketModel*>(ui_.basketView->model()), &BasketModel::basketDataChanged,