diff --git a/src/emu/cpu/upd7810/upd7810.c b/src/emu/cpu/upd7810/upd7810.c
index bc62fa33ffa..589e1a093ae 100644
--- a/src/emu/cpu/upd7810/upd7810.c
+++ b/src/emu/cpu/upd7810/upd7810.c
@@ -1987,10 +1987,6 @@ void upd7810_device::execute_set_input(int irqline, int state)
 		else
 		if ( irqline == UPD7810_INTF2 && ( MKL & 0x20 ) )
 			IRR |= INTF2;
-		// gamemaster hack
-		else
-		if (irqline == UPD7810_INTFE1)
-			IRR |= INTFE1;
 		else
 			logerror("upd7810_set_irq_line invalid irq line #%d\n", irqline);
 	}
diff --git a/src/mess/drivers/gmaster.c b/src/mess/drivers/gmaster.c
index 9c7cf293929..8b5fe019f5c 100644
--- a/src/mess/drivers/gmaster.c
+++ b/src/mess/drivers/gmaster.c
@@ -28,7 +28,6 @@ public:
 	DECLARE_WRITE8_MEMBER(gmaster_port_w);
 	DECLARE_DRIVER_INIT(gmaster) { memset(&m_video, 0, sizeof(m_video)); memset(m_ram, 0, sizeof(m_ram)); }
 	UINT32 screen_update_gmaster(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-	INTERRUPT_GEN_MEMBER(gmaster_interrupt);
 
 private:
 	virtual void machine_start();
@@ -278,16 +277,10 @@ void gmaster_state::machine_start()
 }
 
 
-INTERRUPT_GEN_MEMBER(gmaster_state::gmaster_interrupt)
-{
-	m_maincpu->set_input_line(UPD7810_INTFE1, ASSERT_LINE);
-}
-
 static MACHINE_CONFIG_START( gmaster, gmaster_state )
 	MCFG_CPU_ADD("maincpu", UPD7810, XTAL_12MHz/2/*?*/)  // upd78c11 in the unit
 	MCFG_CPU_PROGRAM_MAP(gmaster_mem)
 	MCFG_CPU_IO_MAP( gmaster_io)
-	MCFG_CPU_VBLANK_INT_DRIVER("screen", gmaster_state,  gmaster_interrupt)
 
 	MCFG_SCREEN_ADD("screen", LCD)
 	MCFG_SCREEN_REFRESH_RATE(60)