diff --git a/plugins/channel/demodnfm/nfmdemod.cpp b/plugins/channel/demodnfm/nfmdemod.cpp
index 3621b1bf9..677ca19fb 100644
--- a/plugins/channel/demodnfm/nfmdemod.cpp
+++ b/plugins/channel/demodnfm/nfmdemod.cpp
@@ -36,6 +36,7 @@ NFMDemod::NFMDemod() :
 	m_squelchCount(0),
 	m_agcAttack(2400),
 	m_audioMute(false),
+	m_squelchOpen(false),
 	m_afSquelch(2, afSqTones),
 	m_audioFifo(4, 48000),
 	m_fmExcursion(2400),
@@ -122,7 +123,6 @@ Real angleDist(Real a, Real b)
 
 void NFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool firstOfBurst)
 {
-	bool squelchOpen;
 	Complex ci;
 
 	m_settingsMutex.lock();
@@ -162,7 +162,7 @@ void NFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
 				}
 
 				//squelchOpen = (getMag() > m_squelchLevel);
-				squelchOpen = m_squelchCount == m_agcAttack; // wait for AGC to stabilize
+				m_squelchOpen = m_squelchCount == m_agcAttack; // wait for AGC to stabilize
 
 				/*
 				if (m_afSquelch.analyze(demod))
@@ -170,7 +170,7 @@ void NFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
 					squelchOpen = m_afSquelch.evaluate();
 				}*/
 
-				if ((squelchOpen) && !m_running.m_audioMute)
+				if ((m_squelchOpen) && !m_running.m_audioMute)
 				//if (m_AGC.getAverage() > m_squelchLevel)
 				{
 					if (m_running.m_ctcssOn)
diff --git a/plugins/channel/demodnfm/nfmdemod.h b/plugins/channel/demodnfm/nfmdemod.h
index 55cc4b593..e24eb59a6 100644
--- a/plugins/channel/demodnfm/nfmdemod.h
+++ b/plugins/channel/demodnfm/nfmdemod.h
@@ -67,6 +67,7 @@ public:
 	}
 
 	Real getMag() { return m_AGC.getAverage() / (1<<15); }
+	bool getSquelchOpen() const { return m_squelchOpen; }
 
 private:
 	class MsgConfigureNFMDemod : public Message {
@@ -169,6 +170,7 @@ private:
 	bool m_audioMute;
 
 	double m_squelchLevel;
+	bool m_squelchOpen;
 
 	Real m_lastArgument;
 	//Complex m_m1Sample;
diff --git a/plugins/channel/demodnfm/nfmdemodgui.cpp b/plugins/channel/demodnfm/nfmdemodgui.cpp
index fe8cf450d..9f93bab8f 100644
--- a/plugins/channel/demodnfm/nfmdemodgui.cpp
+++ b/plugins/channel/demodnfm/nfmdemodgui.cpp
@@ -240,6 +240,7 @@ NFMDemodGUI::NFMDemodGUI(PluginAPI* pluginAPI, QWidget* parent) :
 	m_channelMarker(this),
 	m_basicSettingsShown(false),
 	m_doApplySettings(true),
+	m_squelchOpen(false),
 	m_channelPowerDbAvg(20,0)
 {
 	ui->setupUi(this);
@@ -353,4 +354,16 @@ void NFMDemodGUI::tick()
 	Real powDb = CalcDb::dbPower(m_nfmDemod->getMag()) * 2;
 	m_channelPowerDbAvg.feed(powDb);
 	ui->channelPower->setText(QString::number(m_channelPowerDbAvg.average(), 'f', 1));
+	bool squelchOpen = m_nfmDemod->getSquelchOpen();
+
+	if (squelchOpen != m_squelchOpen)
+	{
+		m_squelchOpen = squelchOpen;
+
+		if (m_squelchOpen) {
+			ui->audioMute->setStyleSheet("QToolButton { background-color : green; }");
+		} else {
+			ui->audioMute->setStyleSheet("QToolButton { background:rgb(79,79,79); }");
+		}
+	}
 }
diff --git a/plugins/channel/demodnfm/nfmdemodgui.h b/plugins/channel/demodnfm/nfmdemodgui.h
index 0d9a7fa15..e044a8f00 100644
--- a/plugins/channel/demodnfm/nfmdemodgui.h
+++ b/plugins/channel/demodnfm/nfmdemodgui.h
@@ -63,6 +63,7 @@ private:
 	NFMDemod* m_nfmDemod;
 	bool m_ctcssOn;
 	bool m_audioMute;
+	bool m_squelchOpen;
 	MovingAverage<Real> m_channelPowerDbAvg;
 
 	static const int m_rfBW[];