diff --git a/src/mame/drivers/zaxxon.cpp b/src/mame/drivers/zaxxon.cpp
index ac7df7e8f7d..4d20840ac07 100644
--- a/src/mame/drivers/zaxxon.cpp
+++ b/src/mame/drivers/zaxxon.cpp
@@ -1186,7 +1186,7 @@ ROM_END
 ROM_START( zaxxonb )
 	ROM_REGION( 0x6000, "maincpu", 0 )
 	ROM_LOAD( "jackson_rom3.u27", 0x0000, 0x2000, CRC(125bca1c) SHA1(f4160966d42e5282736cde8a276204ba8910ca61) ) /* Need to verify ALL the labels in this set */
-	ROM_LOAD( "jackson_rom2.u28", 0x2000, 0x2000, CRC(c088df92) SHA1(c0c6cd8dcf6db65129980331fa9ecc3800b63436) ) /* Same data as ROM3 from the Japanese set */
+	ROM_LOAD( "jackson_rom2.u28", 0x2000, 0x2000, CRC(c088df92) SHA1(c0c6cd8dcf6db65129980331fa9ecc3800b63436) ) /* Same data as ROM2 from the Japanese set */
 	ROM_LOAD( "jackson_rom1.u29", 0x4000, 0x1000, CRC(e7bdc417) SHA1(209f0d259f60b984c84229bb31af1ef939adc73e) )
 
 	ROM_REGION( 0x1000, "gfx_tx", 0 )
@@ -1578,9 +1578,9 @@ DRIVER_INIT_MEMBER(zaxxon_state,razmataz)
  *************************************/
 
 /* these games run on standard Zaxxon hardware */
-GAME( 1982, zaxxon,   0,      zaxxon,   zaxxon, driver_device,   0,        ROT90,  "Sega",    "Zaxxon (rev D)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
-GAME( 1982, zaxxon2,  zaxxon, zaxxon,   zaxxon, driver_device,   0,        ROT90,  "Sega",    "Zaxxon (set 2)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
-GAME( 1982, zaxxon3,  zaxxon, zaxxon,   zaxxon, driver_device,   0,        ROT90,  "Sega",    "Zaxxon (set 3)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
+GAME( 1982, zaxxon,   0,      zaxxon,   zaxxon, driver_device,   0,        ROT90,  "Sega",    "Zaxxon (set 1, rev D)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
+GAME( 1982, zaxxon2,  zaxxon, zaxxon,   zaxxon, driver_device,   0,        ROT90,  "Sega",    "Zaxxon (set 2, unknown rev)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
+GAME( 1982, zaxxon3,  zaxxon, zaxxon,   zaxxon, driver_device,   0,        ROT90,  "Sega",    "Zaxxon (set 3, unknown rev)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
 GAME( 1982, zaxxonj,  zaxxon, szaxxon,  zaxxon, zaxxon_state,    zaxxonj,  ROT90,  "Sega",    "Zaxxon (Japan)",  MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
 GAME( 1982, zaxxonb,  zaxxon, szaxxon,  zaxxon, zaxxon_state,    zaxxonj,  ROT90,  "bootleg", "Jackson",         MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )