diff --git a/src/mame/drivers/cps1.c b/src/mame/drivers/cps1.c
index b831153ead6..7526427a955 100644
--- a/src/mame/drivers/cps1.c
+++ b/src/mame/drivers/cps1.c
@@ -9345,7 +9345,7 @@ ROM_START( cworld2ja )
 	ROM_LOAD( "sou1",         0x0000, 0x0117, CRC(84f4b2fe) SHA1(dcc9e86cc36316fe42eace02d6df75d08bc8bb6d) )
 
 	ROM_REGION( 0x0200, "bboardplds", 0 )
-	ROM_LOAD( "q522b.1a",     0x0000, 0x0117, NO_DUMP )
+	ROM_LOAD( "q529b.1a",     0x0000, 0x0117, NO_DUMP )
 	ROM_LOAD( "lwio.12e",     0x0000, 0x0117, CRC(ad52b90c) SHA1(f0fd6aeea515ee449320fe15684e6b3ab7f97bf4) )    /* seen the same pcb with IOB1.12E */
 
 	ROM_REGION( 0x0200, "cboardplds", 0 )