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-rw-r--r--src/mame/includes/hp48.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/includes/hp48.h b/src/mame/includes/hp48.h
index 70780f2817d..e6a9533e004 100644
--- a/src/mame/includes/hp48.h
+++ b/src/mame/includes/hp48.h
@@ -191,9 +191,9 @@ public:
virtual bool is_creatable() const { return 1; }
virtual bool must_be_loaded() const { return 0; }
virtual bool is_reset_on_load() const { return 0; }
- virtual const char *image_interface() const { return NULL; }
+ virtual const char *image_interface() const { return nullptr; }
virtual const char *file_extensions() const { return "crd"; }
- 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();