diff --git a/src/mame/drivers/taito_z.c b/src/mame/drivers/taito_z.c
index 99d1a792692..5828a0dd467 100644
--- a/src/mame/drivers/taito_z.c
+++ b/src/mame/drivers/taito_z.c
@@ -4659,9 +4659,8 @@ ROM_START( dblaxle )
 	ROM_LOAD16_WORD( "c78-04.3", 0x00000, 0x80000, CRC(cc1aa37c) SHA1(cfa2eb338dc81c98c637c2f0b14d2baea8b115f5) )	/* STY spritemap */
 
 	ROM_REGION( 0x180000, "ym", 0 )	/* ADPCM samples */
-	ROM_LOAD( "c78-12.33", 0x000000, 0x80000, BAD_DUMP CRC(fbb39585) SHA1(4b7cdf9a3fba71155871b3e52d2301e50bf817ca) )	// Half size ??
-	// ??? gap 0x80000-fffff //
-	ROM_LOAD( "c78-13.46", 0x100000, 0x80000, CRC(1b363aa2) SHA1(0aae3988024654e98cc0c784307b1c329c8f0783) )
+	ROM_LOAD( "c78-12.33", 0x000000, 0x100000, CRC(b0267404) SHA1(ffd337336ff9b096e3725f733364762f6e6d3fab) )
+	ROM_LOAD( "c78-13.46", 0x100000, 0x080000, CRC(1b363aa2) SHA1(0aae3988024654e98cc0c784307b1c329c8f0783) )
 
 	ROM_REGION( 0x80000, "ym.deltat", 0 )	/* Delta-T samples */
 	ROM_LOAD( "c78-14.31",  0x00000, 0x80000, CRC(9cad4dfb) SHA1(9187ef827a3f1bc9233d0e45e72c72c0956c5912) )