diff --git a/plugins/channelrx/demodnfm/nfmdemod.cpp b/plugins/channelrx/demodnfm/nfmdemod.cpp
index d2b4aceb6..e2713c884 100644
--- a/plugins/channelrx/demodnfm/nfmdemod.cpp
+++ b/plugins/channelrx/demodnfm/nfmdemod.cpp
@@ -277,8 +277,8 @@ void NFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
                         }
                         else
                         {
-                            Real squelchFactor = (Real) (m_squelchCount - m_squelchGate) / 480.0f;
-                            sample = demod * m_running.m_volume * squelchFactor * squelchFactor;
+                            Real squelchFactor = smootherstep((Real) (m_squelchCount - m_squelchGate) / 480.0f);
+                            sample = demod * m_running.m_volume * squelchFactor;
                         }
 					}
 				}
diff --git a/plugins/channelrx/demodnfm/nfmdemod.h b/plugins/channelrx/demodnfm/nfmdemod.h
index 9a02f47e6..ee1a6e24f 100644
--- a/plugins/channelrx/demodnfm/nfmdemod.h
+++ b/plugins/channelrx/demodnfm/nfmdemod.h
@@ -244,6 +244,15 @@ private:
     PhaseDiscriminators m_phaseDiscri;
 
 	void apply();
+
+    float smootherstep(float x)
+    {
+        double x3 = x * x * x;
+        double x4 = x * x3;
+        double x5 = x * x4;
+
+        return (float) (6.0*x5 - 15.0*x4 + 10.0*x3);
+    }
 };
 
 #endif // INCLUDE_NFMDEMOD_H