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-rw-r--r--src/mame/audio/gridlee.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/audio/gridlee.cpp b/src/mame/audio/gridlee.cpp
index e91a0e38758..b7575c2c34f 100644
--- a/src/mame/audio/gridlee.cpp
+++ b/src/mame/audio/gridlee.cpp
@@ -28,8 +28,8 @@ gridlee_sound_device::gridlee_sound_device(const machine_config &mconfig, const
m_tone_step(0),
m_tone_fraction(0),
m_tone_volume(0),
- m_stream(NULL),
- m_samples(NULL),
+ m_stream(nullptr),
+ m_samples(nullptr),
m_freq_to_step(0.0)
{
memset(m_sound_data, 0, sizeof(UINT8)*24);