diff --git a/src/engine/platform/genesisext.cpp b/src/engine/platform/genesisext.cpp
index bfe771a6..1f320dd3 100644
--- a/src/engine/platform/genesisext.cpp
+++ b/src/engine/platform/genesisext.cpp
@@ -24,6 +24,8 @@
 #define CHIP_FREQBASE fmFreqBase
 #define CHIP_DIVIDER fmDivBase
 
+#define IS_REALLY_MUTED(x) (isMuted[x] && (x<5 || !softPCM || (isMuted[5] && isMuted[6])))
+
 int DivPlatformGenesisExt::dispatch(DivCommand c) {
   if (c.chan<2) {
     return DivPlatformGenesis::dispatch(c);
@@ -542,7 +544,7 @@ void DivPlatformGenesisExt::forceIns() {
       rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
     }
     rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
-    rWrite(chanOffs[i]+ADDR_LRAF,(isMuted[i]?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
+    rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
     if (chan[i].active) {
       chan[i].keyOn=true;
       chan[i].freqChanged=true;