diff --git a/src/mame/drivers/williams.c b/src/mame/drivers/williams.c
index cad9bdd3ebf..acad9ad3d86 100644
--- a/src/mame/drivers/williams.c
+++ b/src/mame/drivers/williams.c
@@ -1693,7 +1693,7 @@ MACHINE_CONFIG_END
 static MACHINE_CONFIG_DERIVED( joust2, williams2 )
 
 	/* basic machine hardware */
-	MCFG_WILLIAMS_CVSD_SOUND_ADD("cvsd")
+	MCFG_WILLIAMS_CVSD_SOUND_ADD("cvsd_sound")
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
 
 	MCFG_MACHINE_START(joust2)
diff --git a/src/mame/includes/williams.h b/src/mame/includes/williams.h
index 3e8dbe8db6e..2c54a8b87ca 100644
--- a/src/mame/includes/williams.h
+++ b/src/mame/includes/williams.h
@@ -13,7 +13,7 @@ class williams_state : public driver_device
 public:
 	williams_state(const machine_config &mconfig, device_type type, const char *tag)
 		: driver_device(mconfig, type, tag),
-		  m_cvsd_sound(*this, "cvsd"),
+		  m_cvsd_sound(*this, "cvsd_sound"),
 		  m_nvram(*this, "nvram") ,
 		m_videoram(*this, "videoram"),
 		m_blaster_palette_0(*this, "blaster_pal0"),