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-rw-r--r--src/devices/bus/rs232/null_modem.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/bus/rs232/null_modem.cpp b/src/devices/bus/rs232/null_modem.cpp
index e34cc1e7597..4c5d7417a8b 100644
--- a/src/devices/bus/rs232/null_modem.cpp
+++ b/src/devices/bus/rs232/null_modem.cpp
@@ -15,7 +15,7 @@ null_modem_device::null_modem_device(const machine_config &mconfig, const char *
m_rs232_stopbits(*this, "RS232_STOPBITS"),
m_input_count(0),
m_input_index(0),
- m_timer_poll(NULL)
+ m_timer_poll(nullptr)
{
}