diff --git a/src/mess/drivers/apple2gs.c b/src/mess/drivers/apple2gs.c
index 6bdf0c6fdde..3c032b981a5 100644
--- a/src/mess/drivers/apple2gs.c
+++ b/src/mess/drivers/apple2gs.c
@@ -321,7 +321,6 @@ static MACHINE_CONFIG_START( apple2gs, apple2gs_state )
 
 	MCFG_SCREEN_ADD("screen", RASTER)
 	MCFG_SCREEN_REFRESH_RATE(60)
-	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
 	MCFG_SCREEN_SIZE(704, 262)  // 640+32+32 for the borders
 	MCFG_SCREEN_VISIBLE_AREA(0,703,0,230)
 	MCFG_SCREEN_UPDATE_DRIVER(apple2gs_state, screen_update_apple2gs)