diff --git a/src/mame/drivers/gaelco2.cpp b/src/mame/drivers/gaelco2.cpp
index 704db4737ca..d2ba59da875 100644
--- a/src/mame/drivers/gaelco2.cpp
+++ b/src/mame/drivers/gaelco2.cpp
@@ -954,7 +954,7 @@ ROM_START( srollnd )
 	ROM_LOAD( "nd5.u49", 0x0000000, 0x080000, CRC(5ec78408) SHA1(1a5b3a0bdbd36bf6607e47dedf31f4b9a7b89667) )
 	ROM_LOAD( "nd3.u51", 0x0200000, 0x020000, CRC(e19ac5b8) SHA1(980a3b339f6958e5e04ea624f26dabd2e06f0c68) )
 	ROM_LOAD( "nd6.u48", 0x0400000, 0x020000, CRC(81cd4097) SHA1(94c7f0d3c21070039dbef9fc43d0f5f2619dad5a) )
-	ROM_LOAD( "nd4.u58", 0x0600000, 0x020000, CRC(8c66cd09) SHA1(5cf0a001bfd46c1e955f7952f8a42a001beaf43c) )
+	ROM_LOAD( "nd4.u50", 0x0600000, 0x020000, CRC(8c66cd09) SHA1(5cf0a001bfd46c1e955f7952f8a42a001beaf43c) )
 	
 	ROM_REGION( 0x21b, "pals", 0 )
 	ROM_LOAD( "palce16v8h.u16", 0x000, 0x117, NO_DUMP )