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Diffstat (limited to 'src/mame/drivers/thunderx.c')
-rw-r--r--src/mame/drivers/thunderx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/thunderx.c b/src/mame/drivers/thunderx.c
index f00c52a621b..b2e886c773a 100644
--- a/src/mame/drivers/thunderx.c
+++ b/src/mame/drivers/thunderx.c
@@ -685,7 +685,7 @@ 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 */