diff --git a/src/corelib/plugin/qfactoryloader.cpp b/src/corelib/plugin/qfactoryloader.cpp
index 51be6b3655..a3ae9f8562 100644
--- a/src/corelib/plugin/qfactoryloader.cpp
+++ b/src/corelib/plugin/qfactoryloader.cpp
@@ -122,8 +122,8 @@ void QFactoryLoader::update()
         //
         // ### FIXME find a proper solution
         //
-        const bool isLoadingDebugAndReleaseCocoa = plugins.contains(QStringLiteral("libqcocoa_debug.dylib"))
-                && plugins.contains(QStringLiteral("libqcocoa.dylib"));
+        const bool isLoadingDebugAndReleaseCocoa = plugins.contains(QLatin1String("libqcocoa_debug.dylib"))
+                && plugins.contains(QLatin1String("libqcocoa.dylib"));
 #endif
         for (int j = 0; j < plugins.count(); ++j) {
             QString fileName = QDir::cleanPath(path + QLatin1Char('/') + plugins.at(j));
diff --git a/src/plugins/bearer/linux_common/qofonoservice_linux.cpp b/src/plugins/bearer/linux_common/qofonoservice_linux.cpp
index adf7feef2e..897ee953c0 100644
--- a/src/plugins/bearer/linux_common/qofonoservice_linux.cpp
+++ b/src/plugins/bearer/linux_common/qofonoservice_linux.cpp
@@ -118,7 +118,7 @@ QString QOfonoManagerInterface::currentModem()
     for (const QString &modem : modems) {
         QOfonoModemInterface device(modem);
         if (device.isPowered() && device.isOnline()
-                && device.interfaces().contains(QStringLiteral("org.ofono.NetworkRegistration")))
+                && device.interfaces().contains(QLatin1String("org.ofono.NetworkRegistration")))
         return modem;
     }
     return QString();
diff --git a/src/tools/moc/main.cpp b/src/tools/moc/main.cpp
index b30de66258..18945f1ce5 100644
--- a/src/tools/moc/main.cpp
+++ b/src/tools/moc/main.cpp
@@ -395,9 +395,9 @@ int runMoc(int argc, char **argv)
         pp.macros.remove(macro);
     }
     const QStringList noNotesCompatValues = parser.values(noNotesWarningsCompatOption);
-    if (parser.isSet(noNotesOption) || noNotesCompatValues.contains(QStringLiteral("n")))
+    if (parser.isSet(noNotesOption) || noNotesCompatValues.contains(QLatin1String("n")))
         moc.displayNotes = false;
-    if (parser.isSet(noWarningsOption) || noNotesCompatValues.contains(QStringLiteral("w")))
+    if (parser.isSet(noWarningsOption) || noNotesCompatValues.contains(QLatin1String("w")))
         moc.displayWarnings = moc.displayNotes = false;
 
     if (autoInclude) {