diff --git a/src/engine/platform/msm6258.cpp b/src/engine/platform/msm6258.cpp
index 7f4d2e63..fbede0b5 100644
--- a/src/engine/platform/msm6258.cpp
+++ b/src/engine/platform/msm6258.cpp
@@ -31,10 +31,6 @@ const char** DivPlatformMSM6258::getRegisterSheet() {
 }
 
 void DivPlatformMSM6258::acquire(short** buf, size_t len) {
-  short* outs[2]={
-    &msmOut,
-    NULL
-  };
   for (size_t h=0; h<len; h++) {
     if (--msmClockCount<0) {
       if (--msmDividerCount<=0) {
@@ -71,7 +67,7 @@ void DivPlatformMSM6258::acquire(short** buf, size_t len) {
           }
         }
         
-        msm->sound_stream_update(outs,1);
+        msm->sound_stream_update(&msmOut,1);
         msmDividerCount=msmDivider;
       }
       msmClockCount=msmClock;
diff --git a/src/engine/platform/sound/oki/okim6258.cpp b/src/engine/platform/sound/oki/okim6258.cpp
index 5bf6714d..a6c3e26f 100644
--- a/src/engine/platform/sound/oki/okim6258.cpp
+++ b/src/engine/platform/sound/oki/okim6258.cpp
@@ -135,9 +135,9 @@ void okim6258_device::device_reset()
 //  sound_stream_update - handle a stream update
 //-------------------------------------------------
 
-void okim6258_device::sound_stream_update(short** outputs, int len)
+void okim6258_device::sound_stream_update(short* output, int len)
 {
-	short* buffer = outputs[0];
+	short* buffer = output;
 
 	if (m_status & STATUS_PLAYING)
 	{
diff --git a/src/engine/platform/sound/oki/okim6258.h b/src/engine/platform/sound/oki/okim6258.h
index 88a429d3..b3dc65ef 100644
--- a/src/engine/platform/sound/oki/okim6258.h
+++ b/src/engine/platform/sound/oki/okim6258.h
@@ -43,7 +43,7 @@ public:
 	void device_clock_changed();
 
 	// sound stream updates
-	void sound_stream_update(short** outputs, int len);
+	void sound_stream_update(short* output, int len);
 
 private:
 	int16_t clock_adpcm(uint8_t nibble);