diff --git a/sdrbase/dsp/spectrummarkers.cpp b/sdrbase/dsp/spectrummarkers.cpp
index 773772911..ac95c4f54 100644
--- a/sdrbase/dsp/spectrummarkers.cpp
+++ b/sdrbase/dsp/spectrummarkers.cpp
@@ -56,8 +56,12 @@ bool SpectrumHistogramMarker::deserialize(const QByteArray& data)
         m_markerType = (SpectrumMarkerType) tmp;
         int r, g, b;
         d.readS32(4, &r, 255);
+        m_markerColor.setRed(r);
         d.readS32(5, &g, 255);
+        m_markerColor.setGreen(g);
         d.readS32(6, &b, 255);
+        m_markerColor.setBlue(b);
+
         d.readBool(7, &m_show);
 
         return true;
@@ -98,8 +102,11 @@ bool SpectrumWaterfallMarker::deserialize(const QByteArray& data)
         d.readFloat(2, &m_time, 0);
         int r, g, b;
         d.readS32(4, &r, 255);
+        m_markerColor.setRed(r);
         d.readS32(5, &g, 255);
+        m_markerColor.setGreen(g);
         d.readS32(6, &b, 255);
+        m_markerColor.setBlue(b);
         d.readBool(7, &m_show);
 
         return true;
diff --git a/sdrbase/dsp/spectrumsettings.cpp b/sdrbase/dsp/spectrumsettings.cpp
index 8eac4e258..cedd876d9 100644
--- a/sdrbase/dsp/spectrumsettings.cpp
+++ b/sdrbase/dsp/spectrumsettings.cpp
@@ -86,6 +86,17 @@ QByteArray SpectrumSettings::serialize() const
     s.writeBool(24, m_ssb);
     s.writeBool(25, m_usb);
 	s.writeS32(26, m_fpsPeriodMs);
+	s.writeS32(100, m_histogramMarkers.size());
+
+	for (int i = 0; i < m_histogramMarkers.size(); i++) {
+		s.writeBlob(101+i, m_histogramMarkers[i].serialize());
+	}
+
+	s.writeS32(110, m_waterfallMarkers.size());
+
+	for (int i = 0; i < m_waterfallMarkers.size(); i++) {
+		s.writeBlob(111+i, m_waterfallMarkers[i].serialize());
+	}
 
 	return s.final();
 }
@@ -101,6 +112,7 @@ bool SpectrumSettings::deserialize(const QByteArray& data)
 
 	int tmp;
     uint32_t utmp;
+	QByteArray bytetmp;
 
 	if (d.getVersion() == 1)
     {
@@ -135,6 +147,35 @@ bool SpectrumSettings::deserialize(const QByteArray& data)
         d.readBool(25, &m_usb, true);
 		d.readS32(26, &tmp, 50);
 		m_fpsPeriodMs = tmp < 5 ? 5 : tmp > 500 ? 500 : tmp;
+		int histogramMarkersSize;
+
+		d.readS32(100, &histogramMarkersSize, 0);
+		histogramMarkersSize = histogramMarkersSize < 0 ? 0 :
+			histogramMarkersSize > SpectrumHistogramMarker::m_maxNbOfMarkers ?
+				SpectrumHistogramMarker::m_maxNbOfMarkers : histogramMarkersSize;
+		m_histogramMarkers.clear();
+
+		for (int i = 0; i < histogramMarkersSize; i++)
+		{
+			d.readBlob(101+i, &bytetmp);
+			m_histogramMarkers.push_back(SpectrumHistogramMarker());
+			m_histogramMarkers.back().deserialize(bytetmp);
+		}
+
+		int waterfallMarkersSize;
+
+		d.readS32(110, &waterfallMarkersSize, 0);
+		waterfallMarkersSize = waterfallMarkersSize < 0 ? 0 :
+			waterfallMarkersSize > SpectrumWaterfallMarker::m_maxNbOfMarkers ?
+				SpectrumWaterfallMarker::m_maxNbOfMarkers : waterfallMarkersSize;
+		m_waterfallMarkers.clear();
+
+		for (int i = 0; i < waterfallMarkersSize; i++)
+		{
+			d.readBlob(111+i, &bytetmp);
+			m_waterfallMarkers.push_back(SpectrumWaterfallMarker());
+			m_waterfallMarkers.back().deserialize(bytetmp);
+		}
 
 		return true;
 	}
diff --git a/sdrbase/dsp/spectrumsettings.h b/sdrbase/dsp/spectrumsettings.h
index 9a9b1f42d..ea220d0a8 100644
--- a/sdrbase/dsp/spectrumsettings.h
+++ b/sdrbase/dsp/spectrumsettings.h
@@ -70,6 +70,8 @@ public:
     bool m_usb;    //!< USB display with increasing frequencies towads the right - else decreasing frequencies
     QString m_wsSpectrumAddress;
     uint16_t m_wsSpectrumPort;
+	QList<SpectrumHistogramMarker> m_histogramMarkers;
+	QList<SpectrumWaterfallMarker> m_waterfallMarkers;
 	static const int m_log2FFTSizeMin = 6;   // 64
 	static const int m_log2FFTSizeMax = 15;  // 32k
 
@@ -80,6 +82,9 @@ public:
     virtual QByteArray serialize() const;
     virtual bool deserialize(const QByteArray& data);
 
+	QList<SpectrumHistogramMarker>& getHistogramMarkers() { return m_histogramMarkers; }
+	QList<SpectrumWaterfallMarker>& getWaterfallMarkers() { return m_waterfallMarkers; }
+
     static int getAveragingMaxScale(AveragingMode averagingMode); //!< Max power of 10 multiplier to 2,5,10 base ex: 2 -> 2,5,10,20,50,100,200,500,1000
     static int getAveragingValue(int averagingIndex, AveragingMode averagingMode);
     static int getAveragingIndex(int averagingValue, AveragingMode averagingMode);
diff --git a/sdrgui/gui/glspectrum.cpp b/sdrgui/gui/glspectrum.cpp
index 998b0efb5..a25f431e0 100644
--- a/sdrgui/gui/glspectrum.cpp
+++ b/sdrgui/gui/glspectrum.cpp
@@ -1171,6 +1171,10 @@ void GLSpectrum::paintGL()
 
 void GLSpectrum::drawSpectrumMarkers()
 {
+	if (!m_currentSpectrum) {
+		return;
+	}
+
 	QVector4D lineColor(1.0f, 1.0f, 1.0f, 0.3f);
 
     // paint histogram markers
@@ -2090,7 +2094,6 @@ void GLSpectrum::updateHistogramMarkers()
 		m_histogramMarkers[i].m_fftBin = m_histogramMarkers[i].m_fftBin < 0 ?
 			0 : m_histogramMarkers[i].m_fftBin > m_fftSize - 1 ?
 				m_fftSize - 1 : m_histogramMarkers[i].m_fftBin;
-		qDebug("GLSpectrum::updateHistogramMarkers: %d: m_fftBin: %d", i, m_histogramMarkers[i].m_fftBin);
 		m_histogramMarkers[i].m_frequencyStr = displayScaled(
 			m_histogramMarkers[i].m_frequency,
 			'f',
diff --git a/sdrgui/gui/glspectrumgui.cpp b/sdrgui/gui/glspectrumgui.cpp
index 3a7f6cbc6..19b30ebb7 100644
--- a/sdrgui/gui/glspectrumgui.cpp
+++ b/sdrgui/gui/glspectrumgui.cpp
@@ -92,6 +92,8 @@ void GLSpectrumGUI::resetToDefaults()
 
 QByteArray GLSpectrumGUI::serialize() const
 {
+    const_cast<GLSpectrumGUI*>(this)->m_settings.getHistogramMarkers() = m_glSpectrum->getHistogramMarkers();
+    const_cast<GLSpectrumGUI*>(this)->m_settings.getWaterfallMarkers() = m_glSpectrum->getWaterfallMarkers();
     return m_settings.serialize();
 }
 
@@ -99,6 +101,8 @@ bool GLSpectrumGUI::deserialize(const QByteArray& data)
 {
     if (m_settings.deserialize(data))
     {
+        m_glSpectrum->setHistogramMarkers(m_settings.getHistogramMarkers());
+        m_glSpectrum->setWaterfallMarkers(m_settings.getWaterfallMarkers());
         setAveragingCombo();
         displaySettings(); // ends with blockApplySettings(false)
         applySettings();