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-rw-r--r--src/devices/machine/mc68681.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/mc68681.cpp b/src/devices/machine/mc68681.cpp
index 8b40488de24..edf1a23f817 100644
--- a/src/devices/machine/mc68681.cpp
+++ b/src/devices/machine/mc68681.cpp
@@ -109,7 +109,7 @@ void mc68681_device::device_start()
read_inport.resolve();
write_outport.resolve_safe();
- duart_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(mc68681_device::duart_timer_callback),this), NULL);
+ duart_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(mc68681_device::duart_timer_callback),this), nullptr);
save_item(NAME(ACR));
save_item(NAME(IMR));