diff --git a/src/QtLocationPlugin/QGCMapEngine.cpp b/src/QtLocationPlugin/QGCMapEngine.cpp
index fcd219fbd32954e31f46bd14b29aa9f1a7e92f4d..fe64539d25fc0b8cdb3091d5c9fe7b1a439eae43 100644
--- a/src/QtLocationPlugin/QGCMapEngine.cpp
+++ b/src/QtLocationPlugin/QGCMapEngine.cpp
@@ -187,13 +187,13 @@ QGCMapEngine::_wipeOldCaches()
 #ifdef __mobile__
     oldCacheDir = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation)      + QLatin1String("/QGCMapCache55");
 #else
-    oldCacheDir = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QLatin1String("/QGCMapCache55");
+    oldCacheDir = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QStringLiteral("/QGCMapCache55");
 #endif
     _checkWipeDirectory(oldCacheDir);
 #ifdef __mobile__
     oldCacheDir = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation)      + QLatin1String("/QGCMapCache100");
 #else
-    oldCacheDir = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QLatin1String("/QGCMapCache100");
+    oldCacheDir = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QStringLiteral("/QGCMapCache100");
 #endif
     _checkWipeDirectory(oldCacheDir);
 }
@@ -208,11 +208,11 @@ QGCMapEngine::init()
 #ifdef __mobile__
     QString cacheDir = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation)      + QLatin1String("/QGCMapCache" CACHE_PATH_VERSION);
 #else
-    QString cacheDir = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QLatin1String("/QGCMapCache" CACHE_PATH_VERSION);
+    QString cacheDir = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QStringLiteral("/QGCMapCache" CACHE_PATH_VERSION);
 #endif
     if(!QDir::root().mkpath(cacheDir)) {
         qWarning() << "Could not create mapping disk cache directory: " << cacheDir;
-        cacheDir = QDir::homePath() + QLatin1String("/.qgcmapscache/");
+        cacheDir = QDir::homePath() + QStringLiteral("/.qgcmapscache/");
         if(!QDir::root().mkpath(cacheDir)) {
             qWarning() << "Could not create mapping disk cache directory: " << cacheDir;
             cacheDir.clear();
diff --git a/src/QtLocationPlugin/QGCTileCacheWorker.cpp b/src/QtLocationPlugin/QGCTileCacheWorker.cpp
index 0f847311dacce3841cb7e0bc1d45e9cd25978b87..0fdf19f956a566c539a74484bc2b1fec02293020 100644
--- a/src/QtLocationPlugin/QGCTileCacheWorker.cpp
+++ b/src/QtLocationPlugin/QGCTileCacheWorker.cpp
@@ -30,8 +30,8 @@
 #include "time.h"
 
 const char* kDefaultSet = "Default Tile Set";
-const QString kSession          = QLatin1String("QGeoTileWorkerSession");
-const QString kExportSession    = QLatin1String("QGeoTileExportSession");
+const QString kSession          = QStringLiteral("QGeoTileWorkerSession");
+const QString kExportSession    = QStringLiteral("QGeoTileExportSession");
 
 QGC_LOGGING_CATEGORY(QGCTileCacheLog, "QGCTileCacheLog")
 
diff --git a/src/QtLocationPlugin/QGeoTiledMappingManagerEngineQGC.cpp b/src/QtLocationPlugin/QGeoTiledMappingManagerEngineQGC.cpp
index 5a41dfeb56c6af590c72d836e567809262d58ded..a3456b9ea4a9726ae95292b1d083af2e08951feb 100644
--- a/src/QtLocationPlugin/QGeoTiledMappingManagerEngineQGC.cpp
+++ b/src/QtLocationPlugin/QGeoTiledMappingManagerEngineQGC.cpp
@@ -216,7 +216,7 @@ QGeoTiledMappingManagerEngineQGC::_setCache(const QVariantMap &parameters)
         if(!QFileInfo(cacheDir).exists()) {
             if(!QDir::root().mkpath(cacheDir)) {
                 qWarning() << "Could not create mapping disk cache directory: " << cacheDir;
-                cacheDir = QDir::homePath() + QLatin1String("/.qgcmapscache/");
+                cacheDir = QDir::homePath() + QStringLiteral("/.qgcmapscache/");
             }
         }
     }
diff --git a/src/VideoStreaming/VideoStreaming.cc b/src/VideoStreaming/VideoStreaming.cc
index d7ec9a912bdc005d34f3e4e7cc7ed7efad88be98..9fe2e0d96eb4e63992d4d7f5974d2446df5abccc 100644
--- a/src/VideoStreaming/VideoStreaming.cc
+++ b/src/VideoStreaming/VideoStreaming.cc
@@ -159,7 +159,7 @@ void initializeVideoStreaming(int &argc, char* argv[], char* logpath, char* debu
     Q_UNUSED(debuglevel);
 #endif
     qmlRegisterType<VideoItem>              ("QGroundControl.QgcQtGStreamer", 1, 0, "VideoItem");
-    qmlRegisterUncreatableType<VideoSurface>("QGroundControl.QgcQtGStreamer", 1, 0, "VideoSurface", QLatin1String("VideoSurface from QML is not supported"));
+    qmlRegisterUncreatableType<VideoSurface>("QGroundControl.QgcQtGStreamer", 1, 0, "VideoSurface", QStringLiteral("VideoSurface from QML is not supported"));
 }
 
 void shutdownVideoStreaming()
diff --git a/src/VideoStreaming/gstqtvideosink/painters/openglsurfacepainter.cpp b/src/VideoStreaming/gstqtvideosink/painters/openglsurfacepainter.cpp
index dbdad9ba3db5512a37c2d7f57997a515c393c84b..91921e9ca8475c1b41ed6dbd49f3b846fc5d3207 100644
--- a/src/VideoStreaming/gstqtvideosink/painters/openglsurfacepainter.cpp
+++ b/src/VideoStreaming/gstqtvideosink/painters/openglsurfacepainter.cpp
@@ -60,7 +60,7 @@ OpenGLSurfacePainter::OpenGLSurfacePainter()
     , m_videoColorMatrix(GST_VIDEO_COLOR_MATRIX_UNKNOWN)
 {
 #ifndef QT_OPENGL_ES
-        glActiveTexture = (_glActiveTexture) QGLContext::currentContext()->getProcAddress(QLatin1String("glActiveTexture"));
+        glActiveTexture = (_glActiveTexture) QGLContext::currentContext()->getProcAddress(QStringLiteral("glActiveTexture"));
 #endif
 }
 
@@ -397,11 +397,11 @@ ArbFpSurfacePainter::ArbFpSurfacePainter()
     , m_programId(0)
 {
     const QGLContext *context = QGLContext::currentContext();
-    glProgramStringARB  = (_glProgramStringARB)  context->getProcAddress(QLatin1String("glProgramStringARB"));
-    glBindProgramARB    = (_glBindProgramARB)    context->getProcAddress(QLatin1String("glBindProgramARB"));
-    glDeleteProgramsARB = (_glDeleteProgramsARB) context->getProcAddress(QLatin1String("glDeleteProgramsARB"));
-    glGenProgramsARB    = (_glGenProgramsARB)    context->getProcAddress(QLatin1String("glGenProgramsARB"));
-    glProgramLocalParameter4fARB = (_glProgramLocalParameter4fARB) context->getProcAddress(QLatin1String("glProgramLocalParameter4fARB"));
+    glProgramStringARB  = (_glProgramStringARB)  context->getProcAddress(QStringLiteral("glProgramStringARB"));
+    glBindProgramARB    = (_glBindProgramARB)    context->getProcAddress(QStringLiteral("glBindProgramARB"));
+    glDeleteProgramsARB = (_glDeleteProgramsARB) context->getProcAddress(QStringLiteral("glDeleteProgramsARB"));
+    glGenProgramsARB    = (_glGenProgramsARB)    context->getProcAddress(QStringLiteral("glGenProgramsARB"));
+    glProgramLocalParameter4fARB = (_glProgramLocalParameter4fARB) context->getProcAddress(QStringLiteral("glProgramLocalParameter4fARB"));
 }
 
 void ArbFpSurfacePainter::init(const BufferFormat &format)
diff --git a/src/ui/MainWindow.cc b/src/ui/MainWindow.cc
index 9fa3240ba948b203d0e328f31a28a93134b9f5ed..d04a82a377c8a9ef6af500a9f0ed514dae50c97f 100644
--- a/src/ui/MainWindow.cc
+++ b/src/ui/MainWindow.cc
@@ -152,7 +152,7 @@ MainWindow::MainWindow()
 
     // Image provider
     QQuickImageProvider* pImgProvider = dynamic_cast<QQuickImageProvider*>(qgcApp()->toolbox()->imageProvider());
-    _mainQmlWidgetHolder->getEngine()->addImageProvider(QLatin1String("QGCImages"), pImgProvider);
+    _mainQmlWidgetHolder->getEngine()->addImageProvider(QStringLiteral("QGCImages"), pImgProvider);
 
     // Set dock options
     setDockOptions(0);