diff --git a/src/mame/drivers/decocass.cpp b/src/mame/drivers/decocass.cpp
index 4d4be9469ed..d08f02a103a 100644
--- a/src/mame/drivers/decocass.cpp
+++ b/src/mame/drivers/decocass.cpp
@@ -1912,7 +1912,7 @@ DRIVER_INIT_MEMBER(decocass_state,cdsteljn)
 /* 15 */ GAME( 1981, cluckypo,  decocass, cluckypo, decocass, decocass_state, decocass, ROT270, "Data East Corporation", "Lucky Poker (DECO Cassette) (US)", 0 )
 /* 16 */ GAME( 1981, ctisland,  decocass, ctisland, decocass, decocass_state, decocrom, ROT270, "Data East Corporation", "Treasure Island (DECO Cassette) (US) (set 1)", 0 )
 /*    */ GAME( 1981, ctisland2, ctisland, ctisland, decocass, decocass_state, decocrom, ROT270, "Data East Corporation", "Treasure Island (DECO Cassette) (US) (set 2)", 0 )
-/*    */ GAME( 1981, ctisland3, ctisland, ctisland3,decocass, decocass_state, decocrom, ROT270, "Data East Corporation", "Treasure Island (DECO Cassette) (Region D)", MACHINE_NOT_WORKING ) /* region code 'D' unkonwn region */
+/*    */ GAME( 1981, ctisland3, ctisland, ctisland3,decocass, decocass_state, decocrom, ROT270, "Data East Corporation", "Treasure Island (DECO Cassette) (Region D)", 0 ) /* region code 'D' unkonwn region */
 /* 17 */ // 1981.10 Bobbitto
 /* 18 */ GAME( 1982, cexplore,  decocass, cexplore, cexplore, decocass_state, decocass, ROT270, "Data East Corporation", "Explorer (DECO Cassette) (US)", MACHINE_NOT_WORKING )
 /* 19 */ GAME( 1982, cdiscon1,  decocass, cdiscon1, decocass, decocass_state, decocass, ROT270, "Data East Corporation", "Disco No.1 (DECO Cassette) (US)", 0 )