diff --git a/src/mess/drivers/poly.c b/src/mess/drivers/poly.c
index 1878eee9552..71c80ed5e71 100644
--- a/src/mess/drivers/poly.c
+++ b/src/mess/drivers/poly.c
@@ -168,7 +168,6 @@ static ACIA6850_INTERFACE( acia_intf )
 
 static const mc6854_interface adlc_intf =
 {
-	DEVCB_NULL,
 	DEVCB_NULL,//DEVCB_DEVICE_LINE_MEMBER(ECONET_TAG, econet_device, data_r),
 	DEVCB_NULL,//DEVCB_DEVICE_LINE_MEMBER(ECONET_TAG, econet_device, data_w),
 	NULL,