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-rw-r--r--src/devices/machine/z80pio.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/z80pio.cpp b/src/devices/machine/z80pio.cpp
index e04727bf664..21541eb68ba 100644
--- a/src/devices/machine/z80pio.cpp
+++ b/src/devices/machine/z80pio.cpp
@@ -275,7 +275,7 @@ void z80pio_device::check_interrupts()
//-------------------------------------------------
z80pio_device::pio_port::pio_port() :
- m_device(NULL),
+ m_device(nullptr),
m_index(0),
m_mode(0),
m_next_control_word(0),