diff --git a/src/mame/drivers/hotstuff.cpp b/src/mame/drivers/hotstuff.cpp
index 183bc2578df..0591f5cec79 100644
--- a/src/mame/drivers/hotstuff.cpp
+++ b/src/mame/drivers/hotstuff.cpp
@@ -88,7 +88,6 @@ static MACHINE_CONFIG_START( hotstuff )
 
 	MCFG_CPU_ADD("maincpu", M68000, 16000000)
 	MCFG_CPU_PROGRAM_MAP(hotstuff_map)
-	MCFG_CPU_VBLANK_INT_DRIVER("screen", hotstuff_state,  irq1_line_hold)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
 	MCFG_SCREEN_REFRESH_RATE(60)
@@ -100,6 +99,7 @@ static MACHINE_CONFIG_START( hotstuff )
 	MCFG_PALETTE_ADD("palette", 0x200)
 
 	MCFG_DEVICE_ADD("rtc", MC146818, XTAL_32_768kHz)
+	MCFG_MC146818_IRQ_HANDLER(INPUTLINE("maincpu", M68K_IRQ_1))
 MACHINE_CONFIG_END