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-rw-r--r--src/mame/machine/smartmed.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/machine/smartmed.h b/src/mame/machine/smartmed.h
index 4f15cf35a0f..5e5b2f1c80d 100644
--- a/src/mame/machine/smartmed.h
+++ b/src/mame/machine/smartmed.h
@@ -215,7 +215,7 @@ public:
virtual bool is_reset_on_load() const { return 0; }
virtual const char *image_interface() const { return "sm_memc"; }
virtual const char *file_extensions() const { return "smc"; }
- virtual const option_guide *create_option_guide() const { return NULL; }
+ virtual const option_guide *create_option_guide() const { return nullptr; }
virtual bool call_load();
virtual void call_unload();