diff --git a/src/mame/drivers/taito_f2.c b/src/mame/drivers/taito_f2.c
index 6161fd47a04..ae9597369d0 100644
--- a/src/mame/drivers/taito_f2.c
+++ b/src/mame/drivers/taito_f2.c
@@ -3451,7 +3451,7 @@ static MACHINE_CONFIG_DERIVED( metalb, taito_f2_tc0510nio )
 	MCFG_GFXDECODE_MODIFY("gfxdecode", deadconx)
 	MCFG_DEVICE_REMOVE("palette")
 	MCFG_PALETTE_ADD("palette", 8192)
-	MCFG_PALETTE_FORMAT(xRRRRRGGGGGBBBBB)
+	MCFG_PALETTE_FORMAT(RRRRGGGGBBBBxxxx)
 	MCFG_VIDEO_START_OVERRIDE(taitof2_state,taitof2_metalb)
 	MCFG_SCREEN_MODIFY("screen")
 	MCFG_SCREEN_UPDATE_DRIVER(taitof2_state, screen_update_taitof2_metalb)
@@ -3541,6 +3541,9 @@ static MACHINE_CONFIG_DERIVED( dinorex, taito_f2_tc0510nio )
 	MCFG_VIDEO_START_OVERRIDE(taitof2_state,taitof2_dinorex)
 	MCFG_SCREEN_MODIFY("screen")
 	MCFG_SCREEN_UPDATE_DRIVER(taitof2_state, screen_update_taitof2_pri)
+	
+	MCFG_PALETTE_MODIFY("palette")
+	MCFG_PALETTE_FORMAT(RRRRGGGGBBBBxxxx)
 
 	MCFG_TC0100SCN_ADD("tc0100scn", liquidk_tc0100scn_intf)
 	MCFG_TC0100SCN_GFXDECODE("gfxdecode")
@@ -3558,6 +3561,9 @@ static MACHINE_CONFIG_DERIVED( qjinsei, taito_f2_tc0510nio )
 	MCFG_VIDEO_START_OVERRIDE(taitof2_state,taitof2_quiz)
 	MCFG_SCREEN_MODIFY("screen")
 	MCFG_SCREEN_UPDATE_DRIVER(taitof2_state, screen_update_taitof2_pri)
+	
+	MCFG_PALETTE_MODIFY("palette")
+	MCFG_PALETTE_FORMAT(RRRRGGGGBBBBxxxx)
 
 	MCFG_TC0100SCN_ADD("tc0100scn", liquidk_tc0100scn_intf)
 	MCFG_TC0100SCN_GFXDECODE("gfxdecode")
@@ -3575,6 +3581,9 @@ static MACHINE_CONFIG_DERIVED( qcrayon, taito_f2_tc0510nio )
 	MCFG_VIDEO_START_OVERRIDE(taitof2_state,taitof2_quiz)
 	MCFG_SCREEN_MODIFY("screen")
 	MCFG_SCREEN_UPDATE_DRIVER(taitof2_state, screen_update_taitof2_pri)
+	
+	MCFG_PALETTE_MODIFY("palette")
+	MCFG_PALETTE_FORMAT(RRRRGGGGBBBBxxxx)
 
 	MCFG_TC0100SCN_ADD("tc0100scn", liquidk_tc0100scn_intf)
 	MCFG_TC0100SCN_GFXDECODE("gfxdecode")
@@ -3592,6 +3601,9 @@ static MACHINE_CONFIG_DERIVED( qcrayon2, taito_f2_tc0510nio )
 	MCFG_VIDEO_START_OVERRIDE(taitof2_state,taitof2_quiz)
 	MCFG_SCREEN_MODIFY("screen")
 	MCFG_SCREEN_UPDATE_DRIVER(taitof2_state, screen_update_taitof2_pri)
+	
+	MCFG_PALETTE_MODIFY("palette")
+	MCFG_PALETTE_FORMAT(RRRRGGGGBBBBxxxx)
 
 	MCFG_TC0100SCN_ADD("tc0100scn", liquidk_tc0100scn_intf)
 	MCFG_TC0100SCN_GFXDECODE("gfxdecode")