diff --git a/src/mame/drivers/naomi.c b/src/mame/drivers/naomi.c
index 11b9a756417..5db9e181cdd 100644
--- a/src/mame/drivers/naomi.c
+++ b/src/mame/drivers/naomi.c
@@ -815,10 +815,6 @@ ROM_START( csmash )
 	ROM_LOAD("mpr23425.6", 0x3000000, 0x0800000, CRC(47f51da2) SHA1(af5ecd460114caed3a00157ffd3a2df0fbf348c0) )
 	ROM_LOAD("mpr23426.7", 0x3800000, 0x0800000, CRC(7f91b13f) SHA1(2d534f77291ebfedc011bf0e803a1b9243fb477f) )
 	ROM_LOAD("mpr23427.8", 0x4000000, 0x0800000, CRC(5851d525) SHA1(1cb1073542d75a3bcc0d363ed31d49bcaf1fd494) )
-
-	ROM_REGION(0x200000, REGION_USER2, 0)
-	ROM_LOAD16_WORD_SWAP("epr-21577.bin",  0x000000, 0x200000, CRC(cf36e97b) SHA1(b085305982e7572e58b03a9d35f17ae319c3bbc6) )
-
 ROM_END
 
 /*