diff --git a/src/engine/platform/rf5c68.h b/src/engine/platform/rf5c68.h
index c22688c3..2703a290 100644
--- a/src/engine/platform/rf5c68.h
+++ b/src/engine/platform/rf5c68.h
@@ -35,6 +35,7 @@ class DivPlatformRF5C68: public DivDispatch {
       SharedChannel<int>(255),
       audPos(0),
       sample(-1),
+      wave(-1),
       panning(255),
       setPos(false),
       macroVolMul(64) {}
diff --git a/src/engine/platform/ymz280b.h b/src/engine/platform/ymz280b.h
index d2f2f1bb..810d5223 100644
--- a/src/engine/platform/ymz280b.h
+++ b/src/engine/platform/ymz280b.h
@@ -35,6 +35,7 @@ class DivPlatformYMZ280B: public DivDispatch {
       SharedChannel<int>(255),
       audPos(0),
       sample(-1),
+      wave(-1),
       panning(8),
       setPos(false),
       isNewYMZ(false),