diff --git a/plugins/channelrx/demodnfm/nfmdemod.cpp b/plugins/channelrx/demodnfm/nfmdemod.cpp
index e8e82a716..6ab3ea518 100644
--- a/plugins/channelrx/demodnfm/nfmdemod.cpp
+++ b/plugins/channelrx/demodnfm/nfmdemod.cpp
@@ -82,6 +82,8 @@ NFMDemod::NFMDemod(DeviceSourceAPI *devieAPI) :
     DSPEngine::instance()->getAudioDeviceManager()->addAudioSink(&m_audioFifo, getInputMessageQueue());
     m_audioSampleRate = DSPEngine::instance()->getAudioDeviceManager()->getOutputSampleRate();
 
+    m_lowpass.create(301, m_audioSampleRate, 250.0);
+
     applyChannelSettings(m_inputSampleRate, m_inputFrequencyOffset, true);
 	applySettings(m_settings, true);
 
diff --git a/plugins/channeltx/modnfm/nfmmod.cpp b/plugins/channeltx/modnfm/nfmmod.cpp
index 794975e5a..0f9032570 100644
--- a/plugins/channeltx/modnfm/nfmmod.cpp
+++ b/plugins/channeltx/modnfm/nfmmod.cpp
@@ -74,6 +74,7 @@ NFMMod::NFMMod(DeviceSinkAPI *deviceAPI) :
 	DSPEngine::instance()->getAudioDeviceManager()->addAudioSource(&m_audioFifo, getInputMessageQueue());
 	m_audioSampleRate = DSPEngine::instance()->getAudioDeviceManager()->getInputSampleRate();
 
+    m_lowpass.create(301, m_audioSampleRate, 250.0);
 	m_toneNco.setFreq(1000.0, m_audioSampleRate);
 	m_ctcssNco.setFreq(88.5, m_audioSampleRate);