diff --git a/src/mame/drivers/hunter2.cpp b/src/mame/drivers/hunter2.cpp
index 246d8fcf641..118181351c5 100644
--- a/src/mame/drivers/hunter2.cpp
+++ b/src/mame/drivers/hunter2.cpp
@@ -380,6 +380,7 @@ static MACHINE_CONFIG_START( hunter2, hunter2_state )
 	MCFG_PALETTE_ADD("palette", 2)
 	MCFG_PALETTE_INIT_OWNER(hunter2_state, hunter2)
 	MCFG_DEVICE_ADD("lcdc", HD61830, XTAL_4_9152MHz/2/2) // unknown clock
+	MCFG_VIDEO_SET_SCREEN("screen")
 
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
diff --git a/src/mame/drivers/imds2.cpp b/src/mame/drivers/imds2.cpp
index bcc2358c81c..23094966ab5 100644
--- a/src/mame/drivers/imds2.cpp
+++ b/src/mame/drivers/imds2.cpp
@@ -835,6 +835,7 @@ static MACHINE_CONFIG_START(imds2 , imds2_state)
 		MCFG_I8275_DRAW_CHARACTER_CALLBACK_OWNER(imds2_state , crtc_display_pixels)
 		MCFG_I8275_DRQ_CALLBACK(DEVWRITELINE("iocdma" , i8257_device , dreq2_w))
 		MCFG_I8275_IRQ_CALLBACK(INPUTLINE("ioccpu" , I8085_INTR_LINE))
+		MCFG_VIDEO_SET_SCREEN("screen")
 
 		MCFG_SCREEN_ADD("screen" , RASTER)
 		MCFG_SCREEN_UPDATE_DEVICE("ioccrtc" , i8275_device , screen_update)
diff --git a/src/mame/drivers/vt240.cpp b/src/mame/drivers/vt240.cpp
index 91ea2820019..69c3e5c4a36 100644
--- a/src/mame/drivers/vt240.cpp
+++ b/src/mame/drivers/vt240.cpp
@@ -506,6 +506,7 @@ static MACHINE_CONFIG_START( vt240, vt240_state )
 	MCFG_UPD7220_DISPLAY_PIXELS_CALLBACK_OWNER(vt240_state, hgdc_draw)
 	MCFG_UPD7220_VSYNC_CALLBACK(INPUTLINE("charcpu", I8085_RST75_LINE))
 	MCFG_UPD7220_BLANK_CALLBACK(INPUTLINE("charcpu", I8085_RST55_LINE))
+	MCFG_VIDEO_SET_SCREEN("screen")
 
 	MCFG_MC68681_ADD("duart", XTAL_3_6864MHz) /* 2681 duart (not 68681!) */
 //  MCFG_MC68681_IRQ_CALLBACK(WRITELINE(dectalk_state, dectalk_duart_irq_handler))