diff --git a/src/mame/drivers/pipedrm.c b/src/mame/drivers/pipedrm.c
index 56e06b4e8a7..b8af7944127 100644
--- a/src/mame/drivers/pipedrm.c
+++ b/src/mame/drivers/pipedrm.c
@@ -726,7 +726,7 @@ ROM_START( pipedrm )
 	ROM_LOAD( "yb.u110", 0x10000, 0x10000, CRC(7416554a) SHA1(612aff94da3ec282e200c07eae9af26a28e071bd) )
 
 	ROM_REGION( 0x20000, "sub", 0 )
-	ROM_LOAD( "u4,u86", 0x00000, 0x08000, CRC(497fad4c) SHA1(f151543a0c4a1d6d5d2de5e1dc12fd59dabcf1a8) )
+	ROM_LOAD( "u4.u86", 0x00000, 0x08000, CRC(497fad4c) SHA1(f151543a0c4a1d6d5d2de5e1dc12fd59dabcf1a8) )
 	ROM_LOAD( "u3.u99", 0x10000, 0x10000, CRC(4800322a) SHA1(a616c497ac18351b68b8307050a2a62c717a7873) )
 
 	ROM_REGION( 0x100000, "gfx1", 0 )
@@ -760,7 +760,7 @@ ROM_START( pipedrmu )
 	ROM_LOAD( "02.u110", 0x10000, 0x10000, CRC(c8209b67) SHA1(cca7356d75e8091b07e3328aef523ff452abbcd8) )
 
 	ROM_REGION( 0x20000, "sub", 0 )
-	ROM_LOAD( "u4,u86", 0x00000, 0x08000, CRC(497fad4c) SHA1(f151543a0c4a1d6d5d2de5e1dc12fd59dabcf1a8) )
+	ROM_LOAD( "u4.u86", 0x00000, 0x08000, CRC(497fad4c) SHA1(f151543a0c4a1d6d5d2de5e1dc12fd59dabcf1a8) )
 	ROM_LOAD( "u3.u99", 0x10000, 0x10000, CRC(4800322a) SHA1(a616c497ac18351b68b8307050a2a62c717a7873) )
 
 	ROM_REGION( 0x100000, "gfx1", 0 )
@@ -795,7 +795,7 @@ ROM_START( pipedrmj )
 	ROM_LOAD( "2.u110", 0x10000, 0x10000, CRC(b7adb99a) SHA1(fdab2b99e86aa0b6b17ec95556222e5211ba55e9) )
 
 	ROM_REGION( 0x20000, "sub", 0 )
-	ROM_LOAD( "u4,u86", 0x00000, 0x08000, CRC(497fad4c) SHA1(f151543a0c4a1d6d5d2de5e1dc12fd59dabcf1a8) )
+	ROM_LOAD( "u4.u86", 0x00000, 0x08000, CRC(497fad4c) SHA1(f151543a0c4a1d6d5d2de5e1dc12fd59dabcf1a8) )
 	ROM_LOAD( "u3.u99", 0x10000, 0x10000, CRC(4800322a) SHA1(a616c497ac18351b68b8307050a2a62c717a7873) )
 
 	ROM_REGION( 0x100000, "gfx1", 0 )