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-rw-r--r--src/mame/includes/bzone.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/includes/bzone.h b/src/mame/includes/bzone.h
index 601fcbf3282..fbfde507639 100644
--- a/src/mame/includes/bzone.h
+++ b/src/mame/includes/bzone.h
@@ -10,8 +10,8 @@
#include "machine/mathbox.h"
#include "sound/discrete.h"
-#define BZONE_MASTER_CLOCK (XTAL_12_096MHz)
-#define BZONE_CLOCK_3KHZ ((double)BZONE_MASTER_CLOCK / 4096)
+#define BZONE_MASTER_CLOCK (XTAL(12'096'000))
+#define BZONE_CLOCK_3KHZ (BZONE_MASTER_CLOCK / 4096)
class bzone_state : public driver_device
{