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Diffstat (limited to 'src/mame/drivers/aliens.c')
-rw-r--r--src/mame/drivers/aliens.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/aliens.c b/src/mame/drivers/aliens.c
index b313308b00b..9f69c6ea7e4 100644
--- a/src/mame/drivers/aliens.c
+++ b/src/mame/drivers/aliens.c
@@ -245,13 +245,13 @@ static void volume_callback(int v)
K007232_set_volume(0,1,0,(v >> 4) * 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 YM2151interface ym2151_interface =
+static const struct YM2151interface ym2151_interface =
{
0,
aliens_snd_bankswitch_w