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-rw-r--r--src/mame/audio/scramble.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/audio/scramble.cpp b/src/mame/audio/scramble.cpp
index b91d363bf2b..bafc07653cb 100644
--- a/src/mame/audio/scramble.cpp
+++ b/src/mame/audio/scramble.cpp
@@ -134,7 +134,7 @@ static void filter_w(device_t *device, int data)
C += 220000; /* 220000pF = 0.220uF */
if (data & 2)
C += 47000; /* 47000pF = 0.047uF */
- if (device != NULL)
+ if (device != nullptr)
dynamic_cast<filter_rc_device*>(device)->filter_rc_set_RC(FLT_RC_LOWPASS, 1000, 5100, 0, CAP_P(C));
}