diff --git a/ext/libstrawberry-common/core/workerpool.h b/ext/libstrawberry-common/core/workerpool.h
index 305a34bc..490920a9 100644
--- a/ext/libstrawberry-common/core/workerpool.h
+++ b/ext/libstrawberry-common/core/workerpool.h
@@ -233,9 +233,9 @@ void WorkerPool<HandlerType>::DoStart() {
   executable_path_ = executable_name_;
 
   QStringList search_path;
-  search_path << qApp->applicationDirPath();
+  search_path << QCoreApplication::applicationDirPath();
 #if defined(Q_OS_MACOS) && defined(USE_BUNDLE)
-  search_path << qApp->applicationDirPath() + "/" + USE_BUNDLE_DIR;
+  search_path << QCoreApplication::applicationDirPath() + "/" + USE_BUNDLE_DIR;
 #endif
 
   for (const QString &path_prefix : search_path) {
diff --git a/ext/strawberry-tagreader/tagreaderworker.cpp b/ext/strawberry-tagreader/tagreaderworker.cpp
index 9c46f819..9ac2357b 100644
--- a/ext/strawberry-tagreader/tagreaderworker.cpp
+++ b/ext/strawberry-tagreader/tagreaderworker.cpp
@@ -59,5 +59,5 @@ void TagReaderWorker::MessageArrived(const spb::tagreader::Message &message) {
 void TagReaderWorker::DeviceClosed() {
   AbstractMessageHandler<spb::tagreader::Message>::DeviceClosed();
 
-  qApp->exit();
+  QCoreApplication::exit();
 }
diff --git a/src/core/mainwindow.cpp b/src/core/mainwindow.cpp
index b7437a4d..bc48e8ab 100644
--- a/src/core/mainwindow.cpp
+++ b/src/core/mainwindow.cpp
@@ -1197,7 +1197,7 @@ void MainWindow::Exit() {
 
   if (exit_count_ > 1) {
     exit_ = true;
-    qApp->quit();
+    QCoreApplication::quit();
   }
   else {
     if (app_->player()->engine()->is_fadeout_enabled()) {
@@ -1227,7 +1227,7 @@ void MainWindow::DoExit() {
 void MainWindow::ExitFinished() {
 
   exit_ = true;
-  qApp->quit();
+  QCoreApplication::quit();
 
 }
 
diff --git a/src/core/mpris2.cpp b/src/core/mpris2.cpp
index dbb54c63..416398c5 100644
--- a/src/core/mpris2.cpp
+++ b/src/core/mpris2.cpp
@@ -298,7 +298,7 @@ QStringList Mpris2::SupportedMimeTypes() {
 
 void Mpris2::Raise() { emit RaiseMainWindow(); }
 
-void Mpris2::Quit() { qApp->quit(); }
+void Mpris2::Quit() { QCoreApplication::quit(); }
 
 QString Mpris2::PlaybackStatus() const {
   return PlaybackStatus(app_->player()->GetState());
diff --git a/src/globalshortcuts/globalshortcut-x11.cpp b/src/globalshortcuts/globalshortcut-x11.cpp
index 52e72bee..07ea9376 100644
--- a/src/globalshortcuts/globalshortcut-x11.cpp
+++ b/src/globalshortcuts/globalshortcut-x11.cpp
@@ -72,7 +72,7 @@ Display *X11Display() {
 
   if (!qApp) return nullptr;
 
-  QPlatformNativeInterface *native = qApp->platformNativeInterface();
+  QPlatformNativeInterface *native = QGuiApplication::platformNativeInterface();
   if (!native) return nullptr;
 
   void *display = native->nativeResourceForIntegration("display");
@@ -105,7 +105,7 @@ quint32 AppRootWindow() {
 
   if (!qApp) return 0;
 
-  QPlatformNativeInterface *native = qApp->platformNativeInterface();
+  QPlatformNativeInterface *native = QGuiApplication::platformNativeInterface();
   if (!native) return 0;
 
   QScreen *screen = QGuiApplication::primaryScreen();
diff --git a/src/main.cpp b/src/main.cpp
index 7594884a..e38e9f45 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -192,7 +192,7 @@ int main(int argc, char *argv[]) {
     }
     return 0;
   }
-  a.setQuitOnLastWindowClosed(false);
+  QGuiApplication::setQuitOnLastWindowClosed(false);
 
 #if defined(USE_BUNDLE) && (defined(Q_OS_LINUX) || defined(Q_OS_MACOS))
   qLog(Debug) << "Looking for resources in" << QCoreApplication::applicationDirPath() + "/" + USE_BUNDLE_DIR;
@@ -272,7 +272,7 @@ int main(int argc, char *argv[]) {
 #endif
   translations->LoadTranslation("strawberry", ":/translations", language);
   translations->LoadTranslation("strawberry", TRANSLATIONS_DIR, language);
-  translations->LoadTranslation("strawberry", a.applicationDirPath(), language);
+  translations->LoadTranslation("strawberry", QCoreApplication::applicationDirPath(), language);
   translations->LoadTranslation("strawberry", QDir::currentPath(), language);
 
 #ifdef HAVE_QTSPARKLE
@@ -313,7 +313,7 @@ int main(int argc, char *argv[]) {
 #endif
   QObject::connect(&a, &SingleApplication::receivedMessage, &w, QOverload<quint32, const QByteArray&>::of(&MainWindow::CommandlineOptionsReceived));
 
-  int ret = a.exec();
+  int ret = QCoreApplication::exec();
 
   return ret;
 }
diff --git a/src/osd/osdpretty.cpp b/src/osd/osdpretty.cpp
index 5c004968..1036688f 100644
--- a/src/osd/osdpretty.cpp
+++ b/src/osd/osdpretty.cpp
@@ -166,7 +166,7 @@ OSDPretty::~OSDPretty() {
 void OSDPretty::showEvent(QShowEvent *e) {
 
   screens_.clear();
-  for(QScreen *screen : qApp->screens()) {
+  for(QScreen *screen : QGuiApplication::screens()) {
     screens_.insert(screen->name(), screen);
   }
 
@@ -221,7 +221,7 @@ bool OSDPretty::IsTransparencyAvailable() {
   return QX11Info::isCompositingManagerRunning();
 #elif defined(HAVE_X11) && defined(HAVE_QPA_QPLATFORMNATIVEINTERFACE_H)
   if (qApp) {
-    QPlatformNativeInterface *native = qApp->platformNativeInterface();
+    QPlatformNativeInterface *native = QGuiApplication::platformNativeInterface();
     QScreen *screen = popup_screen_ == nullptr ? QGuiApplication::primaryScreen() : popup_screen_;
     if (native && screen) {
       return native->nativeResourceForScreen(QByteArray("compositingEnabled"), screen);