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-rw-r--r--src/devices/machine/ncr539x.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/ncr539x.cpp b/src/devices/machine/ncr539x.cpp
index fe1fd9919e1..3d0a83b5246 100644
--- a/src/devices/machine/ncr539x.cpp
+++ b/src/devices/machine/ncr539x.cpp
@@ -135,7 +135,7 @@ void ncr539x_device::device_start()
m_out_irq_cb.resolve_safe();
m_out_drq_cb.resolve_safe();
- m_operation_timer = timer_alloc(0, NULL);
+ m_operation_timer = timer_alloc(0, nullptr);
}
//-------------------------------------------------