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Diffstat (limited to 'src/mame/drivers/mainevt.c')
-rw-r--r--src/mame/drivers/mainevt.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/mainevt.c b/src/mame/drivers/mainevt.c
index 6d6b6d1bccf..5a304aa6460 100644
--- a/src/mame/drivers/mainevt.c
+++ b/src/mame/drivers/mainevt.c
@@ -691,13 +691,13 @@ static void volume_callback(int v)
K007232_set_volume(0,1,0,(v & 0x0f) * 0x11);
}
-static struct K007232_interface k007232_interface =
+static const struct K007232_interface k007232_interface =
{
REGION_SOUND1, /* memory regions */
volume_callback /* external port callback */
};
-static struct upd7759_interface upd7759_interface =
+static const struct upd7759_interface upd7759_interface =
{
REGION_SOUND2, /* memory region */
0