diff --git a/src/mame/nec/pc8401a.cpp b/src/mame/nec/pc8401a.cpp
index 79d58b640c5..07f35197870 100644
--- a/src/mame/nec/pc8401a.cpp
+++ b/src/mame/nec/pc8401a.cpp
@@ -614,7 +614,7 @@ void pc8401a_state::pc8500(machine_config &config)
 
 ROM_START( pc8401bd )
 	ROM_REGION( 0x20000, IPL_TAG, ROMREGION_ERASEFF )
-	ROM_LOAD( "pc8401bd.bin", 0x0000, 0x10000, CRC(75d9cbfd) SHA1(78cba85bf94045a5a3ffb58f0361ba047471274b) )
+	ROM_LOAD( "d23c1000c.ic24", 0x0000, 0x20000, CRC(524c2313) SHA1(975874e22927dd8eaf82e8d13f479130d3e09da3) )
 
 	//ROM_REGION( 0x1000, "chargen", 0 )
 	//ROM_LOAD( "pc8441a.bin", 0x0000, 0x1000, NO_DUMP )