diff --git a/src/engine/platform/pce.cpp b/src/engine/platform/pce.cpp
index fe246f540..a1a08891c 100644
--- a/src/engine/platform/pce.cpp
+++ b/src/engine/platform/pce.cpp
@@ -143,7 +143,7 @@ void DivPlatformPCE::tick() {
         chan[i].freqChanged=true;
       }
     }
-    if (chan[i].std.hadWave) {
+    if (chan[i].std.hadWave && !chan[i].pcm) {
       if (chan[i].wave!=chan[i].std.wave) {
         chan[i].wave=chan[i].std.wave;
         updateWave(i);