diff --git a/src/mame/drivers/zaccaria.cpp b/src/mame/drivers/zaccaria.cpp
index 49c033c1888..834eeb1a240 100644
--- a/src/mame/drivers/zaccaria.cpp
+++ b/src/mame/drivers/zaccaria.cpp
@@ -324,10 +324,10 @@ static GFXDECODE_START( zaccaria )
 GFXDECODE_END
 
 
-INTERRUPT_GEN_MEMBER(zaccaria_state::vblank_irq)
+WRITE_LINE_MEMBER(zaccaria_state::vblank_irq)
 {
-	if (m_nmi_mask)
-		device.execute().set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
+	if (state && m_nmi_mask)
+		m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
 }
 
 
@@ -336,7 +336,7 @@ MACHINE_CONFIG_START(zaccaria_state::zaccaria)
 	/* basic machine hardware */
 	MCFG_CPU_ADD("maincpu", Z80,XTAL(18'432'000)/6)   /* verified on pcb */
 	MCFG_CPU_PROGRAM_MAP(main_map)
-	MCFG_CPU_VBLANK_INT_DRIVER("screen", zaccaria_state,  vblank_irq)
+
 //  MCFG_QUANTUM_TIME(attotime::from_hz(1000000))
 
 	MCFG_WATCHDOG_ADD("watchdog")
@@ -362,6 +362,7 @@ MACHINE_CONFIG_START(zaccaria_state::zaccaria)
 	MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
 	MCFG_SCREEN_UPDATE_DRIVER(zaccaria_state, screen_update)
 	MCFG_SCREEN_PALETTE("palette")
+	MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(zaccaria_state, vblank_irq))
 
 	MCFG_GFXDECODE_ADD("gfxdecode", "palette", zaccaria)
 	MCFG_PALETTE_ADD("palette", 32*8+32*8)
diff --git a/src/mame/includes/zaccaria.h b/src/mame/includes/zaccaria.h
index 23b5979088b..c606a7c9dd6 100644
--- a/src/mame/includes/zaccaria.h
+++ b/src/mame/includes/zaccaria.h
@@ -34,7 +34,7 @@ public:
 	virtual void video_start() override;
 	DECLARE_PALETTE_INIT(zaccaria);
 	uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-	INTERRUPT_GEN_MEMBER(vblank_irq);
+	DECLARE_WRITE_LINE_MEMBER(vblank_irq);
 	void draw_sprites(bitmap_ind16 &bitmap,const rectangle &cliprect,uint8_t *spriteram,int color,int section);
 
 	void zaccaria(machine_config &config);