diff --git a/src/mame/drivers/asuka.cpp b/src/mame/drivers/asuka.cpp
index db50ec8524d..abd316d736e 100644
--- a/src/mame/drivers/asuka.cpp
+++ b/src/mame/drivers/asuka.cpp
@@ -1690,6 +1690,9 @@ ROM_START( galmedes )
 	ROM_LOAD( "b68-05.ic43", 0x00000, 0x104, CRC(d6524ccc) SHA1(f3b56253692aebb63278d47832fc27b8b212b59c) )
 ROM_END
 
+// Known to exist (not dumped) a US version of Earth Joker, title screen shows "DISTRIBUTED BY ROMSTAR, INC."
+//  ROMs number from 0 through 4 and the fix rom at IC30 is labeled 1 even though IC5 is also labled as 1
+
 ROM_START( earthjkr )
 	ROM_REGION( 0x100000, "maincpu", 0 )     /* 1024k for 68000 code */
 	ROM_LOAD16_BYTE( "ej_3b.ic23",  0x00000, 0x20000, CRC(bdd86fc2) SHA1(96578860ed03718f8a68847b367eac6c81b79ca2) )