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Diffstat (limited to 'src/mame/drivers/rzone.cpp')
-rw-r--r--src/mame/drivers/rzone.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/rzone.cpp b/src/mame/drivers/rzone.cpp
index ecc753e8a60..d2f798ecd98 100644
--- a/src/mame/drivers/rzone.cpp
+++ b/src/mame/drivers/rzone.cpp
@@ -220,7 +220,7 @@ WRITE8_MEMBER(rzone_state::t2_write_s)
static INPUT_PORTS_START( rzone )
PORT_START("IN.0")
- PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_POWER_ON ) PORT_CHANGED_MEMBER(DEVICE_SELF, hh_sm510_state, input_changed, nullptr)
+ PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_POWER_ON ) PORT_CHANGED_MEMBER(DEVICE_SELF, hh_sm510_state, input_changed, 0)
PORT_BIT( 0x0002, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )
PORT_BIT( 0x0004, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT )
PORT_BIT( 0x0008, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )