diff --git a/ext/libstrawberry-common/core/messagehandler.h b/ext/libstrawberry-common/core/messagehandler.h
index 27264337b..87e5402ef 100644
--- a/ext/libstrawberry-common/core/messagehandler.h
+++ b/ext/libstrawberry-common/core/messagehandler.h
@@ -130,7 +130,7 @@ void AbstractMessageHandler<MT>::SendMessage(const MessageType &message) {
 template <typename MT>
 void AbstractMessageHandler<MT>::SendMessageAsync(const MessageType &message) {
   std::string data = message.SerializeAsString();
-  metaObject()->invokeMethod(this, "WriteMessage", Qt::QueuedConnection, Q_ARG(QByteArray, QByteArray(data.data(), data.size())));
+  QMetaObject::invokeMethod(this, "WriteMessage", Qt::QueuedConnection, Q_ARG(QByteArray, QByteArray(data.data(), data.size())));
 }
 
 template<typename MT>
diff --git a/ext/libstrawberry-common/core/workerpool.h b/ext/libstrawberry-common/core/workerpool.h
index 3813c9fd9..305a34bca 100644
--- a/ext/libstrawberry-common/core/workerpool.h
+++ b/ext/libstrawberry-common/core/workerpool.h
@@ -219,7 +219,7 @@ void WorkerPool<HandlerType>::SetExecutableName(const QString &executable_name)
 
 template <typename HandlerType>
 void WorkerPool<HandlerType>::Start() {
-  metaObject()->invokeMethod(this, "DoStart");
+  QMetaObject::invokeMethod(this, "DoStart");
 }
 
 template <typename HandlerType>
@@ -382,7 +382,7 @@ WorkerPool<HandlerType>::SendMessageWithReply(MessageType *message) {
   }
 
   // Wake up the main thread
-  metaObject()->invokeMethod(this, "SendQueuedMessages", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "SendQueuedMessages", Qt::QueuedConnection);
 
   return reply;
 
diff --git a/src/collection/collectionbackend.cpp b/src/collection/collectionbackend.cpp
index da541151d..25a950ffb 100644
--- a/src/collection/collectionbackend.cpp
+++ b/src/collection/collectionbackend.cpp
@@ -82,7 +82,7 @@ void CollectionBackend::Close() {
 }
 
 void CollectionBackend::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void CollectionBackend::Exit() {
@@ -110,31 +110,31 @@ void CollectionBackend::ReportErrors(const CollectionQuery &query) {
 }
 
 void CollectionBackend::LoadDirectoriesAsync() {
-  metaObject()->invokeMethod(this, "LoadDirectories", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "LoadDirectories", Qt::QueuedConnection);
 }
 
 void CollectionBackend::UpdateTotalSongCountAsync() {
-  metaObject()->invokeMethod(this, "UpdateTotalSongCount", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "UpdateTotalSongCount", Qt::QueuedConnection);
 }
 
 void CollectionBackend::UpdateTotalArtistCountAsync() {
-  metaObject()->invokeMethod(this, "UpdateTotalArtistCount", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "UpdateTotalArtistCount", Qt::QueuedConnection);
 }
 
 void CollectionBackend::UpdateTotalAlbumCountAsync() {
-  metaObject()->invokeMethod(this, "UpdateTotalAlbumCount", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "UpdateTotalAlbumCount", Qt::QueuedConnection);
 }
 
 void CollectionBackend::IncrementPlayCountAsync(const int id) {
-  metaObject()->invokeMethod(this, "IncrementPlayCount", Qt::QueuedConnection, Q_ARG(int, id));
+  QMetaObject::invokeMethod(this, "IncrementPlayCount", Qt::QueuedConnection, Q_ARG(int, id));
 }
 
 void CollectionBackend::IncrementSkipCountAsync(const int id, const float progress) {
-  metaObject()->invokeMethod(this, "IncrementSkipCount", Qt::QueuedConnection, Q_ARG(int, id), Q_ARG(float, progress));
+  QMetaObject::invokeMethod(this, "IncrementSkipCount", Qt::QueuedConnection, Q_ARG(int, id), Q_ARG(float, progress));
 }
 
 void CollectionBackend::ResetStatisticsAsync(const int id) {
-  metaObject()->invokeMethod(this, "ResetStatistics", Qt::QueuedConnection, Q_ARG(int, id));
+  QMetaObject::invokeMethod(this, "ResetStatistics", Qt::QueuedConnection, Q_ARG(int, id));
 }
 
 void CollectionBackend::LoadDirectories() {
@@ -501,7 +501,7 @@ void CollectionBackend::AddOrUpdateSubdirs(const SubdirectoryList &subdirs) {
 }
 
 void CollectionBackend::AddOrUpdateSongsAsync(const SongList &songs) {
-  metaObject()->invokeMethod(this, "AddOrUpdateSongs", Qt::QueuedConnection, Q_ARG(SongList, songs));
+  QMetaObject::invokeMethod(this, "AddOrUpdateSongs", Qt::QueuedConnection, Q_ARG(SongList, songs));
 }
 
 void CollectionBackend::AddOrUpdateSongs(const SongList &songs) {
@@ -1366,7 +1366,7 @@ CollectionBackend::Album CollectionBackend::GetAlbumArt(const QString &effective
 
 void CollectionBackend::UpdateManualAlbumArtAsync(const QString &effective_albumartist, const QString &album, const QUrl &cover_url, const bool clear_art_automatic) {
 
-  metaObject()->invokeMethod(this, "UpdateManualAlbumArt", Qt::QueuedConnection, Q_ARG(QString, effective_albumartist), Q_ARG(QString, album), Q_ARG(QUrl, cover_url), Q_ARG(bool, clear_art_automatic));
+  QMetaObject::invokeMethod(this, "UpdateManualAlbumArt", Qt::QueuedConnection, Q_ARG(QString, effective_albumartist), Q_ARG(QString, album), Q_ARG(QUrl, cover_url), Q_ARG(bool, clear_art_automatic));
 
 }
 
@@ -1433,7 +1433,7 @@ void CollectionBackend::UpdateManualAlbumArt(const QString &effective_albumartis
 
 void CollectionBackend::UpdateAutomaticAlbumArtAsync(const QString &effective_albumartist, const QString &album, const QUrl &cover_url) {
 
-  metaObject()->invokeMethod(this, "UpdateAutomaticAlbumArt", Qt::QueuedConnection, Q_ARG(QString, effective_albumartist), Q_ARG(QString, album), Q_ARG(QUrl, cover_url));
+  QMetaObject::invokeMethod(this, "UpdateAutomaticAlbumArt", Qt::QueuedConnection, Q_ARG(QString, effective_albumartist), Q_ARG(QString, album), Q_ARG(QUrl, cover_url));
 
 }
 
@@ -1806,11 +1806,11 @@ void CollectionBackend::UpdateSongsRating(const QList<int> &id_list, const doubl
 }
 
 void CollectionBackend::UpdateSongRatingAsync(const int id, const double rating) {
-  metaObject()->invokeMethod(this, "UpdateSongRating", Qt::QueuedConnection, Q_ARG(int, id), Q_ARG(double, rating));
+  QMetaObject::invokeMethod(this, "UpdateSongRating", Qt::QueuedConnection, Q_ARG(int, id), Q_ARG(double, rating));
 }
 
 void CollectionBackend::UpdateSongsRatingAsync(const QList<int> &ids, const double rating) {
-  metaObject()->invokeMethod(this, "UpdateSongsRating", Qt::QueuedConnection, Q_ARG(QList<int>, ids), Q_ARG(double, rating));
+  QMetaObject::invokeMethod(this, "UpdateSongsRating", Qt::QueuedConnection, Q_ARG(QList<int>, ids), Q_ARG(double, rating));
 }
 
 void CollectionBackend::UpdateLastSeen(const int directory_id, const int expire_unavailable_songs_days) {
diff --git a/src/collection/collectionwatcher.cpp b/src/collection/collectionwatcher.cpp
index 72c699ec1..29ce946ab 100644
--- a/src/collection/collectionwatcher.cpp
+++ b/src/collection/collectionwatcher.cpp
@@ -120,7 +120,7 @@ CollectionWatcher::CollectionWatcher(Song::Source source, QObject *parent)
 }
 
 void CollectionWatcher::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void CollectionWatcher::Exit() {
diff --git a/src/core/database.cpp b/src/core/database.cpp
index 54bf7e5a6..6a6f50217 100644
--- a/src/core/database.cpp
+++ b/src/core/database.cpp
@@ -97,7 +97,7 @@ Database::~Database() {
 }
 
 void Database::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void Database::Exit() {
diff --git a/src/core/mainwindow.cpp b/src/core/mainwindow.cpp
index 8b024909f..b7437a4dd 100644
--- a/src/core/mainwindow.cpp
+++ b/src/core/mainwindow.cpp
@@ -2117,7 +2117,7 @@ void MainWindow::SongSaveComplete(TagReaderReply *reply, const QPersistentModelI
   if (reply->is_successful() && idx.isValid()) {
     app_->playlist_manager()->current()->ReloadItems(QList<int>() << idx.row());
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
 }
 
diff --git a/src/core/songloader.cpp b/src/core/songloader.cpp
index 98bc1f9af..dac57ef78 100644
--- a/src/core/songloader.cpp
+++ b/src/core/songloader.cpp
@@ -714,7 +714,7 @@ void SongLoader::StopTypefindAsync(bool success) {
   state_ = Finished;
   success_ = success;
 
-  metaObject()->invokeMethod(this, "StopTypefind", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "StopTypefind", Qt::QueuedConnection);
 
 }
 #endif
@@ -726,7 +726,7 @@ void SongLoader::ScheduleTimeoutAsync() {
     ScheduleTimeout();
   }
   else {
-    metaObject()->invokeMethod(this, "ScheduleTimeout", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(this, "ScheduleTimeout", Qt::QueuedConnection);
   }
 
 }
diff --git a/src/core/tagreaderclient.cpp b/src/core/tagreaderclient.cpp
index 35ba3f7a7..374d6f307 100644
--- a/src/core/tagreaderclient.cpp
+++ b/src/core/tagreaderclient.cpp
@@ -55,7 +55,7 @@ TagReaderClient::TagReaderClient(QObject *parent) : QObject(parent), worker_pool
 void TagReaderClient::Start() { worker_pool_->Start(); }
 
 void TagReaderClient::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void TagReaderClient::Exit() {
@@ -137,7 +137,7 @@ void TagReaderClient::ReadFileBlocking(const QString &filename, Song *song) {
   if (reply->WaitForFinished()) {
     song->InitFromProtobuf(reply->message().read_file_response().metadata());
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
 }
 
@@ -151,7 +151,7 @@ bool TagReaderClient::SaveFileBlocking(const QString &filename, const Song &meta
   if (reply->WaitForFinished()) {
     ret = reply->message().save_file_response().success();
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
   return ret;
 
@@ -167,7 +167,7 @@ bool TagReaderClient::IsMediaFileBlocking(const QString &filename) {
   if (reply->WaitForFinished()) {
     ret = reply->message().is_media_file_response().success();
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
   return ret;
 
@@ -184,7 +184,7 @@ QByteArray TagReaderClient::LoadEmbeddedArtBlocking(const QString &filename) {
     const std::string &data_str = reply->message().load_embedded_art_response().data();
     ret = QByteArray(data_str.data(), data_str.size());
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
   return ret;
 
@@ -201,7 +201,7 @@ QImage TagReaderClient::LoadEmbeddedArtAsImageBlocking(const QString &filename)
     const std::string &data_str = reply->message().load_embedded_art_response().data();
     ret.loadFromData(QByteArray(data_str.data(), data_str.size()));
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
   return ret;
 
@@ -217,7 +217,7 @@ bool TagReaderClient::SaveEmbeddedArtBlocking(const QString &filename, const QBy
   if (reply->WaitForFinished()) {
     ret = reply->message().save_embedded_art_response().success();
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
   return ret;
 
diff --git a/src/covermanager/albumcoverloader.cpp b/src/covermanager/albumcoverloader.cpp
index 4838c0d92..271fe4701 100644
--- a/src/covermanager/albumcoverloader.cpp
+++ b/src/covermanager/albumcoverloader.cpp
@@ -78,7 +78,7 @@ AlbumCoverLoader::AlbumCoverLoader(QObject *parent)
 void AlbumCoverLoader::ExitAsync() {
 
   stop_requested_ = true;
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 
 }
 
@@ -310,7 +310,7 @@ quint64 AlbumCoverLoader::EnqueueTask(Task &task) {
     tasks_.enqueue(task);
   }
 
-  metaObject()->invokeMethod(this, "ProcessTasks", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "ProcessTasks", Qt::QueuedConnection);
 
   return task.id;
 
@@ -549,7 +549,7 @@ qint64 AlbumCoverLoader::SaveEmbeddedCoverAsync(const QString &song_filename, co
 
   QMutexLocker l(&mutex_save_image_async_);
   qint64 id = ++save_image_async_id_;
-  metaObject()->invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QString, song_filename), Q_ARG(QString, cover_filename));
+  QMetaObject::invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QString, song_filename), Q_ARG(QString, cover_filename));
   return id;
 
 }
@@ -558,7 +558,7 @@ qint64 AlbumCoverLoader::SaveEmbeddedCoverAsync(const QString &song_filename, co
 
   QMutexLocker l(&mutex_save_image_async_);
   qint64 id = ++save_image_async_id_;
-  metaObject()->invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QString, song_filename), Q_ARG(QImage, image));
+  QMetaObject::invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QString, song_filename), Q_ARG(QImage, image));
   return id;
 
 }
@@ -567,7 +567,7 @@ qint64 AlbumCoverLoader::SaveEmbeddedCoverAsync(const QString &song_filename, co
 
   QMutexLocker l(&mutex_save_image_async_);
   qint64 id = ++save_image_async_id_;
-  metaObject()->invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QString, song_filename), Q_ARG(QByteArray, image_data));
+  QMetaObject::invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QString, song_filename), Q_ARG(QByteArray, image_data));
   return id;
 
 }
@@ -576,7 +576,7 @@ qint64 AlbumCoverLoader::SaveEmbeddedCoverAsync(const QList<QUrl> &urls, const Q
 
   QMutexLocker l(&mutex_save_image_async_);
   qint64 id = ++save_image_async_id_;
-  metaObject()->invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QList<QUrl>, urls), Q_ARG(QString, cover_filename));
+  QMetaObject::invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QList<QUrl>, urls), Q_ARG(QString, cover_filename));
   return id;
 
 }
@@ -585,7 +585,7 @@ qint64 AlbumCoverLoader::SaveEmbeddedCoverAsync(const QList<QUrl> &urls, const Q
 
   QMutexLocker l(&mutex_save_image_async_);
   qint64 id = ++save_image_async_id_;
-  metaObject()->invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QList<QUrl>, urls), Q_ARG(QImage, image));
+  QMetaObject::invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QList<QUrl>, urls), Q_ARG(QImage, image));
   return id;
 
 }
@@ -594,7 +594,7 @@ qint64 AlbumCoverLoader::SaveEmbeddedCoverAsync(const QList<QUrl> &urls, const Q
 
   QMutexLocker l(&mutex_save_image_async_);
   qint64 id = ++save_image_async_id_;
-  metaObject()->invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QList<QUrl>, urls), Q_ARG(QByteArray, image_data));
+  QMetaObject::invokeMethod(this, "SaveEmbeddedCover", Qt::QueuedConnection, Q_ARG(qint64, id), Q_ARG(QList<QUrl>, urls), Q_ARG(QByteArray, image_data));
   return id;
 
 }
@@ -710,6 +710,6 @@ void AlbumCoverLoader::SaveEmbeddedArtFinished(const qint64 id, TagReaderReply *
     emit SaveEmbeddedCoverAsyncFinished(id, reply->is_successful(), cleared);
   }
 
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
 }
diff --git a/src/device/devicedatabasebackend.cpp b/src/device/devicedatabasebackend.cpp
index c15841443..68441d7a0 100644
--- a/src/device/devicedatabasebackend.cpp
+++ b/src/device/devicedatabasebackend.cpp
@@ -62,7 +62,7 @@ void DeviceDatabaseBackend::Close() {
 }
 
 void DeviceDatabaseBackend::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void DeviceDatabaseBackend::Exit() {
diff --git a/src/device/devicelister.cpp b/src/device/devicelister.cpp
index 64df33b31..8f22fc2e7 100644
--- a/src/device/devicelister.cpp
+++ b/src/device/devicelister.cpp
@@ -73,13 +73,13 @@ void DeviceLister::ThreadStarted() { Init(); }
 int DeviceLister::MountDeviceAsync(const QString &id) {
 
   const int request_id = next_mount_request_id_++;
-  metaObject()->invokeMethod(this, "MountDevice", Qt::QueuedConnection, Q_ARG(QString, id), Q_ARG(int, request_id));
+  QMetaObject::invokeMethod(this, "MountDevice", Qt::QueuedConnection, Q_ARG(QString, id), Q_ARG(int, request_id));
   return request_id;
 
 }
 
 void DeviceLister::UnmountDeviceAsync(const QString &id) {
-  metaObject()->invokeMethod(this, "UnmountDevice", Qt::QueuedConnection, Q_ARG(QString, id));
+  QMetaObject::invokeMethod(this, "UnmountDevice", Qt::QueuedConnection, Q_ARG(QString, id));
 }
 
 void DeviceLister::MountDevice(const QString &id, const int request_id) {
@@ -87,7 +87,7 @@ void DeviceLister::MountDevice(const QString &id, const int request_id) {
 }
 
 void DeviceLister::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void DeviceLister::Exit() {
diff --git a/src/device/filesystemdevice.cpp b/src/device/filesystemdevice.cpp
index 46d44ef9f..9900ffb84 100644
--- a/src/device/filesystemdevice.cpp
+++ b/src/device/filesystemdevice.cpp
@@ -85,7 +85,7 @@ bool FilesystemDevice::Init() {
 }
 
 void FilesystemDevice::CloseAsync() {
-  metaObject()->invokeMethod(this, "Close", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Close", Qt::QueuedConnection);
 }
 
 void FilesystemDevice::Close() {
diff --git a/src/dialogs/edittagdialog.cpp b/src/dialogs/edittagdialog.cpp
index 7bc5f603e..55414fe2e 100644
--- a/src/dialogs/edittagdialog.cpp
+++ b/src/dialogs/edittagdialog.cpp
@@ -1335,7 +1335,7 @@ void EditTagDialog::SongSaveTagsComplete(TagReaderReply *reply, const QString &f
     collection_songs_.insert(song.id(), song);
   }
 
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
   if (save_tag_pending_ <= 0 && save_art_pending_ <= 0) AcceptFinished();
 
@@ -1377,7 +1377,7 @@ void EditTagDialog::SongSaveArtComplete(TagReaderReply *reply, const QString &fi
     app_->current_albumcover_loader()->LoadAlbumCover(song);
   }
 
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
   if (save_tag_pending_ <= 0 && save_art_pending_ <= 0) AcceptFinished();
 
diff --git a/src/engine/gstelementdeleter.cpp b/src/engine/gstelementdeleter.cpp
index ebc135647..12797edf9 100644
--- a/src/engine/gstelementdeleter.cpp
+++ b/src/engine/gstelementdeleter.cpp
@@ -27,7 +27,7 @@
 GstElementDeleter::GstElementDeleter(QObject *parent) : QObject(parent) {}
 
 void GstElementDeleter::DeleteElementLater(GstElement *element) {
-  metaObject()->invokeMethod(this, "DeleteElement", Qt::QueuedConnection, Q_ARG(GstElement*, element));
+  QMetaObject::invokeMethod(this, "DeleteElement", Qt::QueuedConnection, Q_ARG(GstElement*, element));
 }
 
 void GstElementDeleter::DeleteElement(GstElement *element) {
diff --git a/src/playlist/playlist.cpp b/src/playlist/playlist.cpp
index 22ce5b8bb..f4e03bce8 100644
--- a/src/playlist/playlist.cpp
+++ b/src/playlist/playlist.cpp
@@ -427,7 +427,7 @@ void Playlist::SongSaveComplete(TagReaderReply *reply, const QPersistentModelInd
     }
   }
 
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
 
 }
 
@@ -1472,7 +1472,7 @@ void Playlist::ScheduleSaveAsync() {
     ScheduleSave();
   }
   else {
-    metaObject()->invokeMethod(this, "ScheduleSave", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(this, "ScheduleSave", Qt::QueuedConnection);
   }
 
 }
diff --git a/src/playlist/playlistbackend.cpp b/src/playlist/playlistbackend.cpp
index 56a3d9723..5216da122 100644
--- a/src/playlist/playlistbackend.cpp
+++ b/src/playlist/playlistbackend.cpp
@@ -79,7 +79,7 @@ void PlaylistBackend::Close() {
 }
 
 void PlaylistBackend::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void PlaylistBackend::Exit() {
@@ -324,7 +324,7 @@ PlaylistItemPtr PlaylistBackend::RestoreCueData(PlaylistItemPtr item, std::share
 
 void PlaylistBackend::SavePlaylistAsync(int playlist, const PlaylistItemList &items, int last_played, PlaylistGeneratorPtr dynamic) {
 
-  metaObject()->invokeMethod(this, "SavePlaylist", Qt::QueuedConnection, Q_ARG(int, playlist), Q_ARG(PlaylistItemList, items), Q_ARG(int, last_played), Q_ARG(PlaylistGeneratorPtr, dynamic));
+  QMetaObject::invokeMethod(this, "SavePlaylist", Qt::QueuedConnection, Q_ARG(int, playlist), Q_ARG(PlaylistItemList, items), Q_ARG(int, last_played), Q_ARG(PlaylistGeneratorPtr, dynamic));
 
 }
 
diff --git a/src/radios/radiobackend.cpp b/src/radios/radiobackend.cpp
index aeea8882b..53b435b50 100644
--- a/src/radios/radiobackend.cpp
+++ b/src/radios/radiobackend.cpp
@@ -46,7 +46,7 @@ void RadioBackend::Close() {
 }
 
 void RadioBackend::ExitAsync() {
-  metaObject()->invokeMethod(this, "Exit", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "Exit", Qt::QueuedConnection);
 }
 
 void RadioBackend::Exit() {
@@ -59,7 +59,7 @@ void RadioBackend::Exit() {
 }
 
 void RadioBackend::AddChannelsAsync(const RadioChannelList &channels) {
-  metaObject()->invokeMethod(this, "AddChannels", Qt::QueuedConnection, Q_ARG(RadioChannelList, channels));
+  QMetaObject::invokeMethod(this, "AddChannels", Qt::QueuedConnection, Q_ARG(RadioChannelList, channels));
 }
 
 void RadioBackend::AddChannels(const RadioChannelList &channels) {
@@ -87,7 +87,7 @@ void RadioBackend::AddChannels(const RadioChannelList &channels) {
 
 void RadioBackend::GetChannelsAsync() {
 
-  metaObject()->invokeMethod(this, "GetChannels", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "GetChannels", Qt::QueuedConnection);
 
 }
 
@@ -119,7 +119,7 @@ void RadioBackend::GetChannels() {
 }
 
 void RadioBackend::DeleteChannelsAsync() {
-  metaObject()->invokeMethod(this, "DeleteChannels", Qt::QueuedConnection);
+  QMetaObject::invokeMethod(this, "DeleteChannels", Qt::QueuedConnection);
 }
 
 void RadioBackend::DeleteChannels() {