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Diffstat (limited to 'src/mame/drivers/ultratnk.cpp')
-rw-r--r--src/mame/drivers/ultratnk.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/ultratnk.cpp b/src/mame/drivers/ultratnk.cpp
index ccb8e1b4858..82ae96aa553 100644
--- a/src/mame/drivers/ultratnk.cpp
+++ b/src/mame/drivers/ultratnk.cpp
@@ -203,7 +203,7 @@ static INPUT_PORTS_START( ultratnk )
PORT_START("COLLISION")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, ultratnk_state, get_collision, (void *)0 )
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, ultratnk_state, get_collision, (void *)nullptr )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, ultratnk_state, get_collision, (void *)1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) /* VCC */