diff --git a/ext/libstrawberry-common/core/logging.cpp b/ext/libstrawberry-common/core/logging.cpp
index a6c91d858..515b99af6 100644
--- a/ext/libstrawberry-common/core/logging.cpp
+++ b/ext/libstrawberry-common/core/logging.cpp
@@ -126,7 +126,8 @@ class LoggedDebug : public DebugBase<LoggedDebug> {
 static void MessageHandler(QtMsgType type, const QMessageLogContext&, const QString &message) {
 
   if (message.startsWith(kMessageHandlerMagic)) {
-    fprintf(type == QtCriticalMsg || type == QtFatalMsg ? stderr : stdout, "%s\n", message.toUtf8().data() + kMessageHandlerMagicLength);
+    QByteArray message_data = message.toUtf8();
+    fprintf(type == QtCriticalMsg || type == QtFatalMsg ? stderr : stdout, "%s\n", message_data.constData() + kMessageHandlerMagicLength);
     fflush(type == QtCriticalMsg || type == QtFatalMsg ? stderr : stdout);
     return;
   }
diff --git a/ext/libstrawberry-tagreader/tagreadergme.cpp b/ext/libstrawberry-tagreader/tagreadergme.cpp
index 132a0ccd2..ce996d247 100644
--- a/ext/libstrawberry-tagreader/tagreadergme.cpp
+++ b/ext/libstrawberry-tagreader/tagreadergme.cpp
@@ -200,7 +200,7 @@ void GME::VGM::Read(const QFileInfo &file_info, spb::tagreader::SongMetadata *so
   QByteArray gd3_head = file.read(4);
   if (gd3_head.size() < 4) return;
 
-  quint64 pt = GME::UnpackBytes32(gd3_head, gd3_head.size());
+  quint64 pt = GME::UnpackBytes32(gd3_head.constData(), gd3_head.size());
 
   file.seek(SAMPLE_COUNT);
   QByteArray sample_count_bytes = file.read(4);
@@ -215,7 +215,7 @@ void GME::VGM::Read(const QFileInfo &file_info, spb::tagreader::SongMetadata *so
 
   file.seek(file.pos() + 4);
   QByteArray gd3_length_bytes = file.read(4);
-  quint32 gd3_length = GME::UnpackBytes32(gd3_length_bytes, gd3_length_bytes.size());
+  quint32 gd3_length = GME::UnpackBytes32(gd3_length_bytes.constData(), gd3_length_bytes.size());
 
   QByteArray gd3Data = file.read(gd3_length);
   QTextStream fileTagStream(gd3Data, QIODevice::ReadOnly);
@@ -246,11 +246,11 @@ bool GME::VGM::GetPlaybackLength(const QByteArray &sample_count_bytes, const QBy
   if (sample_count_bytes.size() != 4) return false;
   if (loop_count_bytes.size() != 4) return false;
 
-  quint64 sample_count = GME::UnpackBytes32(sample_count_bytes, sample_count_bytes.size());
+  quint64 sample_count = GME::UnpackBytes32(sample_count_bytes.constData(), sample_count_bytes.size());
 
   if (sample_count <= 0) return false;
 
-  quint64 loop_sample_count = GME::UnpackBytes32(loop_count_bytes, loop_count_bytes.size());
+  quint64 loop_sample_count = GME::UnpackBytes32(loop_count_bytes.constData(), loop_count_bytes.size());
 
   if (loop_sample_count <= 0) {
     out_length = sample_count * 1000 / SAMPLE_TIMEBASE;
diff --git a/src/core/database.cpp b/src/core/database.cpp
index 94da3e1cb..1b0980adf 100644
--- a/src/core/database.cpp
+++ b/src/core/database.cpp
@@ -536,7 +536,8 @@ void Database::DoBackup() {
 
 bool Database::OpenDatabase(const QString &filename, sqlite3 **connection) {
 
-  int ret = sqlite3_open(filename.toUtf8(), connection);
+  const QByteArray filename_data = filename.toUtf8();
+  int ret = sqlite3_open(filename_data.constData(), connection);
   if (ret != 0) {
     if (*connection) {
       const char *error_message = sqlite3_errmsg(*connection);
diff --git a/src/core/utilities.cpp b/src/core/utilities.cpp
index 1b381413b..14dc7d148 100644
--- a/src/core/utilities.cpp
+++ b/src/core/utilities.cpp
@@ -693,7 +693,8 @@ QString FiddleFileExtension(const QString &filename, const QString &new_extensio
 }
 
 QString GetEnv(const QString &key) {
-  return QString::fromLocal8Bit(qgetenv(key.toLocal8Bit()));
+  const QByteArray key_data = key.toLocal8Bit();
+  return QString::fromLocal8Bit(qgetenv(key_data.constData()));
 }
 
 void SetEnv(const char *key, const QString &value) {
diff --git a/src/device/deviceproperties.cpp b/src/device/deviceproperties.cpp
index 8d18fbd58..5ce6be2a4 100644
--- a/src/device/deviceproperties.cpp
+++ b/src/device/deviceproperties.cpp
@@ -175,7 +175,7 @@ void DeviceProperties::UpdateHardwareInfo() {
     AddHardwareInfo(row++, tr("Manufacturer"), lister->DeviceManufacturer(id));
     keys = info.keys();
     for (const QString &key : keys) {
-      AddHardwareInfo(row++, tr(key.toLatin1()), info[key].toString());
+      AddHardwareInfo(row++, key, info[key].toString());
     }
 
     ui_->hardware_info->sortItems(0);
diff --git a/src/device/gpoddevice.cpp b/src/device/gpoddevice.cpp
index 6a04163cc..1c22c88d3 100644
--- a/src/device/gpoddevice.cpp
+++ b/src/device/gpoddevice.cpp
@@ -203,7 +203,8 @@ bool GPodDevice::CopyToStorage(const CopyJob &job) {
         cover_file->close();
         QImage image = job.metadata_.image();
         if (image.save(cover_file->fileName(), "JPG")) {
-          result = itdb_track_set_thumbnails(track, QFile::encodeName(cover_file->fileName()));
+          const QByteArray filename = QFile::encodeName(cover_file->fileName());
+          result = itdb_track_set_thumbnails(track, filename.constData());
           if (result) {
             cover_files_ << cover_file;
             track->has_artwork = 1;
@@ -218,7 +219,8 @@ bool GPodDevice::CopyToStorage(const CopyJob &job) {
       }
     }
     else if (!job.cover_source_.isEmpty()) {
-      result = itdb_track_set_thumbnails(track, QFile::encodeName(job.cover_source_));
+      const QByteArray filename = QFile::encodeName(job.cover_source_);
+      result = itdb_track_set_thumbnails(track, filename.constData());
       if (result) track->has_artwork = 1;
     }
     else {
@@ -245,14 +247,15 @@ bool GPodDevice::CopyToStorage(const CopyJob &job) {
   // Put the track in the playlist, if one is specified
   if (!job.playlist_.isEmpty()) {
     // Does the playlist already exist?
-    auto itdbPlaylist = itdb_playlist_by_name(db_, job.playlist_.toUtf8().data());
-    if (itdbPlaylist == nullptr) {
+    QByteArray playlist_name = job.playlist_.toUtf8();
+    Itdb_Playlist *playlist = itdb_playlist_by_name(db_, playlist_name.data());
+    if (!playlist) {
       // Create the playlist
-      itdbPlaylist = itdb_playlist_new(job.playlist_.toUtf8().data(), false);
-      itdb_playlist_add(db_, itdbPlaylist, -1);
+      playlist = itdb_playlist_new(playlist_name.data(), false);
+      itdb_playlist_add(db_, playlist, -1);
     }
     // Playlist should exist so add the track to the playlist
-    itdb_playlist_add_track(itdbPlaylist, track, -1);
+    itdb_playlist_add_track(playlist, track, -1);
   }
 
   AddTrackToModel(track, url_.path());
diff --git a/src/device/gpodloader.cpp b/src/device/gpodloader.cpp
index 91ddcf136..896ac4980 100644
--- a/src/device/gpodloader.cpp
+++ b/src/device/gpodloader.cpp
@@ -65,8 +65,9 @@ void GPodLoader::LoadDatabase() {
 Itdb_iTunesDB *GPodLoader::TryLoad() {
 
   // Load the iTunes database
+  const QByteArray mountpoint = QDir::toNativeSeparators(mount_point_).toLocal8Bit();
   GError *error = nullptr;
-  Itdb_iTunesDB *db = itdb_parse(QDir::toNativeSeparators(mount_point_).toLocal8Bit(), &error);
+  Itdb_iTunesDB *db = itdb_parse(mountpoint.constData(), &error);
 
   // Check for errors
   if (!db) {
diff --git a/src/internet/localredirectserver.cpp b/src/internet/localredirectserver.cpp
index 0cb3dc2b1..74463cb6a 100644
--- a/src/internet/localredirectserver.cpp
+++ b/src/internet/localredirectserver.cpp
@@ -352,7 +352,8 @@ void LocalRedirectServer::WriteTemplate() const {
       break;
     }
 
-    page_data.replace(offset, re_match.capturedLength(), tr(re_match.captured(1).toUtf8()));
+    const QByteArray captured_data = re_match.captured(1).toUtf8();
+    page_data.replace(offset, re_match.capturedLength(), tr(captured_data.constData()));
     offset += re_match.capturedLength();
   }
 
diff --git a/src/main.cpp b/src/main.cpp
index 33f9a61dd..d5d1c63b2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -130,7 +130,8 @@ int main(int argc, char *argv[]) {
 #endif
 
   // This makes us show up nicely in gnome-volume-control
-  g_set_application_name(QCoreApplication::applicationName().toLocal8Bit());
+  const QByteArray g_application_name = QCoreApplication::applicationName().toLocal8Bit();
+  g_set_application_name(g_application_name.constData());
 
   RegisterMetaTypes();