diff --git a/src/mame/drivers/segas16a.c b/src/mame/drivers/segas16a.c
index 8d78a76f404..c5413e28c4c 100644
--- a/src/mame/drivers/segas16a.c
+++ b/src/mame/drivers/segas16a.c
@@ -3317,7 +3317,7 @@ ROM_START( timescan1 )
 	ROM_LOAD( "epr-10547.1",  0x0000, 0x8000, CRC(d24ffc4b) SHA1(3b250e1f026664f7a37f65d1c1a07381e88f11e8) )
 
 	ROM_REGION( 0x2000, "maincpu:key", 0 ) // decryption key
-	ROM_LOAD( "317-0024.key", 0x0000, 0x2000, BAD_DUMP CRC(ee42ec18) SHA1(cb65dd681f38ce20440ddcb01a935c2c8eecc77f) )
+	ROM_LOAD( "317-0024.key", 0x0000, 0x2000, CRC(0e64a504) SHA1(8fb61568d2775e403eb521f82f9d1058a0555a65) )
 ROM_END