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Diffstat (limited to 'src/mame/drivers/exerion.cpp')
-rw-r--r--src/mame/drivers/exerion.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/exerion.cpp b/src/mame/drivers/exerion.cpp
index 611a6d4c5d9..6cee2544726 100644
--- a/src/mame/drivers/exerion.cpp
+++ b/src/mame/drivers/exerion.cpp
@@ -232,7 +232,7 @@ ADDRESS_MAP_END
/* verified from Z80 code */
static INPUT_PORTS_START( exerion )
PORT_START("IN0")
- PORT_BIT( 0x3f, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, exerion_state,exerion_controls_r, (void *)0)
+ PORT_BIT( 0x3f, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, exerion_state,exerion_controls_r, (void *)nullptr)
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )