diff --git a/src/emu/sound/k053260.c b/src/emu/sound/k053260.c
index ed5b636527c..803aab08d3e 100644
--- a/src/emu/sound/k053260.c
+++ b/src/emu/sound/k053260.c
@@ -325,7 +325,7 @@ void k053260_device::KDSC_Voice::voice_reset()
 	m_volume = 0;
 	m_pan = 0;
 	m_loop = false;
-	m_kadpcm = false;
+	m_kadpcm = 0;
 	update_pan_volume();
 }
 
diff --git a/src/emu/sound/k053260.h b/src/emu/sound/k053260.h
index 8e2e4731d29..529fcf4da4f 100644
--- a/src/emu/sound/k053260.h
+++ b/src/emu/sound/k053260.h
@@ -100,7 +100,7 @@ private:
 		// bit packed registers
 		UINT8  m_pan;
 		bool   m_loop;
-		bool   m_kadpcm;
+		int    m_kadpcm;
 	} m_voice[4];
 
 	friend class k053260_device::KDSC_Voice;