diff --git a/src/engine/platform/nes.cpp b/src/engine/platform/nes.cpp
index 87f89a9dc..f5df73b75 100644
--- a/src/engine/platform/nes.cpp
+++ b/src/engine/platform/nes.cpp
@@ -490,7 +490,7 @@ int DivPlatformNES::dispatch(DivCommand c) {
       chan[c.chan].duty=c.value;
       if (c.chan==3) { // noise
         chan[c.chan].freqChanged=true;
-      } else if (c.chan<2) {
+      } else if (c.chan<2 && chan[c.chan].active) {
         rWrite(0x4000+c.chan*4,0x30|chan[c.chan].outVol|((chan[c.chan].duty&3)<<6));
       }
       break;