diff --git a/src/emu/sound/mos6560.h b/src/emu/sound/mos6560.h
index 5c398516669..5742db99b32 100644
--- a/src/emu/sound/mos6560.h
+++ b/src/emu/sound/mos6560.h
@@ -87,7 +87,6 @@
 
 #define MOS6560_VRETRACERATE 60
 #define MOS6561_VRETRACERATE 50
-#define MOS656X_HRETRACERATE 15625
 
 #define MOS6560_MAME_XPOS  4           /* xleft not displayed */
 #define MOS6560_MAME_YPOS  10          /* y up not displayed */
diff --git a/src/mame/drivers/attckufo.c b/src/mame/drivers/attckufo.c
index f841fe06503..1e0186db9a6 100644
--- a/src/mame/drivers/attckufo.c
+++ b/src/mame/drivers/attckufo.c
@@ -149,11 +149,13 @@ INPUT_PORTS_END
 
 static MACHINE_CONFIG_START( attckufo, attckufo_state )
 	/* basic machine hardware */
-	MCFG_CPU_ADD("maincpu", M6502, 14318181/14)
+	MCFG_CPU_ADD("maincpu", M6502, XTAL_14_31818MHz/14)
 	MCFG_CPU_PROGRAM_MAP(cpu_map)
 
-	/* video hardware */
-	MCFG_MOS656X_ATTACK_UFO_ADD("mos6560", "screen", 14318181/14, vic_videoram_map, vic_colorram_map)
+	/* video/sound hardware */
+	MCFG_SPEAKER_STANDARD_MONO("mono")
+	MCFG_MOS656X_ATTACK_UFO_ADD("mos6560", "screen", XTAL_14_31818MHz/14, vic_videoram_map, vic_colorram_map)
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
 MACHINE_CONFIG_END
 
 ROM_START( attckufo )
@@ -166,9 +168,6 @@ ROM_START( attckufo )
 	ROM_LOAD( "6", 0x3400, 0x0400, CRC(8103e031) SHA1(86bc8dd6c74b84804ede31a8454b5b3d3e4d88b1) )
 	ROM_LOAD( "7", 0x3800, 0x0400, CRC(43a41012) SHA1(edd14f49dc9ae7a5a14583b9a92ebbbdd021d7b1) )
 	ROM_LOAD( "8", 0x3c00, 0x0400, CRC(9ce93eb0) SHA1(68753e88db4e920446b9582b5cb713b1beec3b27) )
-
-	ROM_REGION( 0x400, "user1", 0 )
-	ROM_COPY( "maincpu", 0x02000, 0x00000, 0x400)
 ROM_END
 
 GAME( 1980, attckufo, 0,      attckufo, attckufo, driver_device, 0, ROT270, "Ryoto Electric Co.", "Attack Ufo", GAME_SUPPORTS_SAVE )