diff --git a/src/musredit_qt6/mupp/mupp.cpp b/src/musredit_qt6/mupp/mupp.cpp
index ef88569b..af5e7dff 100644
--- a/src/musredit_qt6/mupp/mupp.cpp
+++ b/src/musredit_qt6/mupp/mupp.cpp
@@ -548,11 +548,11 @@ int main(int argc, char *argv[])
   if (script.size() > 0) { // script
     guiFlag = false;
   }
-  QCoreApplication *app = createApplication(argc, argv, guiFlag);
+  QScopedPointer<QCoreApplication> app(createApplication(argc, argv, guiFlag));
 
   std::unique_ptr<PmuppGui> gui;
   std::unique_ptr<PmuppScript> mupp_script;
-  if (qobject_cast<QApplication *>(app)) { // GUI
+  if (qobject_cast<QApplication *>(app.get())) { // GUI
     gui = std::make_unique<PmuppGui>(fln);
     if (gui == nullptr) {
       std::cerr << std::endl;
@@ -565,8 +565,8 @@ int main(int argc, char *argv[])
     gui->resize( 800, 500 );
     gui->show();
 
-    app->connect( app, SIGNAL( lastWindowClosed() ), app, SLOT( quit() ) );
-    app->connect( app, SIGNAL( aboutToQuit() ), gui.get(), SLOT( aboutToQuit() ) );
+    app.get()->connect( app.get(), SIGNAL( lastWindowClosed() ), app.get(), SLOT( quit() ) );
+    app.get()->connect( app.get(), SIGNAL( aboutToQuit() ), gui.get(), SLOT( aboutToQuit() ) );
   } else { // scripting
     mupp_script = std::make_unique<PmuppScript>(script);
     if (mupp_script == nullptr) {
@@ -578,7 +578,7 @@ int main(int argc, char *argv[])
     }
 
     // This will cause the application to exit when the task signals finished.
-    QObject::connect( mupp_script.get(), SIGNAL( finished() ), app, SLOT( quit() ) );
+    QObject::connect( mupp_script.get(), SIGNAL( finished() ), app.get(), SLOT( quit() ) );
 
     // This will run the task from the application event loop.
     QTimer::singleShot(0, mupp_script.get(), SLOT( executeScript() ) );