diff --git a/src/mame/drivers/pgm.c b/src/mame/drivers/pgm.c
index 0038ffb561f..6cb8a8bc532 100644
--- a/src/mame/drivers/pgm.c
+++ b/src/mame/drivers/pgm.c
@@ -3701,7 +3701,7 @@ ROM_END
 ROM_START( svgtw )
 	ROM_REGION( 0x600000, "maincpu", 0 ) /* 68000 Code */
 	PGM_68K_BIOS
-	ROM_LOAD16_WORD_SWAP( "v101tw.U30",      0x100000, 0x080000, CRC(8d0405e4) SHA1(b6175c9ffeaac531d28e7845cb34c673476e286a) )
+	ROM_LOAD16_WORD_SWAP( "v101tw.u30",      0x100000, 0x080000, CRC(8d0405e4) SHA1(b6175c9ffeaac531d28e7845cb34c673476e286a) )
 
 	ROM_REGION( 0x4000, "prot", 0 ) /* ARM protection ASIC - internal rom */ // marked H1
 	ROM_LOAD( "svgpcb_igs027a_execute_only_area", 0x0000, 0x00188, NO_DUMP )