diff --git a/Software/src/GrabWidget.cpp b/Software/src/GrabWidget.cpp
index e2587098c..542097fdc 100644
--- a/Software/src/GrabWidget.cpp
+++ b/Software/src/GrabWidget.cpp
@@ -344,7 +344,7 @@ QRect GrabWidget::resizeAccordingly(QMouseEvent *pe) {
 }
 
 bool GrabWidget::snapEdgeToScreenOrClosestFellow(
-	QRect& newRect, 
+	QRect& newRect,
 	const QRect& screen,
 	std::function<void(QRect&,int)> setter,
 	std::function<int(const QRect&)> getter,
@@ -384,8 +384,8 @@ void GrabWidget::mouseMoveEvent(QMouseEvent *pe)
 	DEBUG_HIGH_LEVEL << Q_FUNC_INFO << "pe->pos() =" << pe->pos();
 
 	QRect screen = QApplication::desktop()->screenGeometry(this);
-	
-	
+
+
 	if (cmd == NOP ){
 		checkAndSetCursors(pe);
 	} else if (cmd == MOVE) {
@@ -455,7 +455,7 @@ void GrabWidget::mouseMoveEvent(QMouseEvent *pe)
 				[](const QRect& r) { return r.bottom(); },
 				[](const QRect& r) { return r.top() - 1; });
 		}
-		
+
 		if (newRect.size() != geometry().size()) {
 			resize(newRect.size());
 		}
@@ -705,7 +705,11 @@ void GrabWidget::onBlueCoef_ValueChanged(double value)
 
 void GrabWidget::setBackgroundColor(QColor color)
 {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
 	DEBUG_MID_LEVEL << Q_FUNC_INFO << Qt::hex << color.rgb();
+#else
+	DEBUG_MID_LEVEL << Q_FUNC_INFO << hex << color.rgb();
+#endif
 
 	m_backgroundColor = color;
 
@@ -723,7 +727,11 @@ void GrabWidget::setBackgroundColor(QColor color)
 
 void GrabWidget::setTextColor(QColor color)
 {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
 	DEBUG_MID_LEVEL << Q_FUNC_INFO << Qt::hex << color.rgb();
+#else
+	DEBUG_MID_LEVEL << Q_FUNC_INFO << hex << color.rgb();
+#endif
 
 	setOpenConfigButtonBackground(color);
 
diff --git a/Software/src/LedDeviceLightpack.cpp b/Software/src/LedDeviceLightpack.cpp
index 9f9cad2f5..44d8669fa 100644
--- a/Software/src/LedDeviceLightpack.cpp
+++ b/Software/src/LedDeviceLightpack.cpp
@@ -65,7 +65,12 @@ LedDeviceLightpack::~LedDeviceLightpack()
 
 void LedDeviceLightpack::setColors(const QList<QRgb> & colors)
 {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
 	DEBUG_MID_LEVEL << Q_FUNC_INFO << Qt::hex << (colors.isEmpty() ? -1 : colors.first());
+#else
+	DEBUG_MID_LEVEL << Q_FUNC_INFO << hex << (colors.isEmpty() ? -1 : colors.first());
+#endif
+
 #if 0
 	DEBUG_LOW_LEVEL << Q_FUNC_INFO << "thread id: " << this->thread()->currentThreadId();
 #endif
@@ -355,7 +360,7 @@ bool LedDeviceLightpack::readDataFromDevice()
 }
 
 bool LedDeviceLightpack::writeBufferToDevice(int command, hid_device *phid_device)
-{	
+{
 	DEBUG_MID_LEVEL << Q_FUNC_INFO << command;
 #if 0
 	DEBUG_LOW_LEVEL << Q_FUNC_INFO << "thread id: " << this->thread()->currentThreadId();
diff --git a/Software/src/LogWriter.cpp b/Software/src/LogWriter.cpp
index a05bca6e2..fd109a761 100644
--- a/Software/src/LogWriter.cpp
+++ b/Software/src/LogWriter.cpp
@@ -29,15 +29,15 @@ int LogWriter::initWith(const QString& logsDirPath)
 
 	QDir logsDir(logsDirPath);
 	if (logsDir.exists() == false) {
-		cout << "mkdir " << logsDirPath.toStdString() << endl;
+		std::cout << "mkdir " << logsDirPath.toStdString() << std::endl;
 		if (logsDir.mkdir(logsDirPath) == false) {
-			cerr << "Failed mkdir '" << logsDirPath.toStdString() << "' for logs. Exit." << endl;
+			std::cerr << "Failed mkdir '" << logsDirPath.toStdString() << "' for logs. Exit." << std::endl;
 			return LightpackApplication::LogsDirecroryCreationFail_ErrorCode;
 		}
 	}
 
 	if (rotateLogFiles(logsDir) == false)
-		cerr << "Failed to rotate old log files." << endl;
+		std::cerr << "Failed to rotate old log files." << std::endl;
 
 	const QString logFilePath = logsDirPath + "/Prismatik.0.log";
 	QScopedPointer<QFile> logFile(new QFile(logFilePath));
@@ -45,17 +45,26 @@ int LogWriter::initWith(const QString& logsDirPath)
 		QMutexLocker locker(&m_mutex);
 
 		m_logStream.setDevice(logFile.take());
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
 		m_logStream << Qt::endl;
+#else
+		m_logStream << endl;
+#endif
 
 		const QDateTime currentDateTime(QDateTime::currentDateTime());
 		m_logStream << currentDateTime.date().toString("yyyy_MM_dd") << " ";
-		m_logStream << currentDateTime.time().toString("hh:mm:ss:zzz") << " Prismatik " << VERSION_STR << Qt::endl;
+		m_logStream << currentDateTime.time().toString("hh:mm:ss:zzz") << " Prismatik " << VERSION_STR;
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
+		m_logStream << Qt::endl;
+#else
+		m_logStream << endl;
+#endif
 
 		// write the cached log
 		m_logStream << m_startupLogStore;
 		m_startupLogStore.clear();
 	} else {
-		cerr << "Failed to open logs file: '" << logFilePath.toStdString() << "'. Exit." << endl;
+		std::cerr << "Failed to open logs file: '" << logFilePath.toStdString() << "'. Exit." << std::endl;
 		return LightpackApplication::OpenLogsFail_ErrorCode;
 	}