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Diffstat (limited to 'src/mame/machine/microdrv.h')
-rw-r--r--src/mame/machine/microdrv.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/machine/microdrv.h b/src/mame/machine/microdrv.h
index 7d8913aae00..50225a3f564 100644
--- a/src/mame/machine/microdrv.h
+++ b/src/mame/machine/microdrv.h
@@ -61,7 +61,7 @@ public:
virtual bool is_reset_on_load() const { return 0; }
virtual const char *image_interface() const { return "ql_cass"; }
virtual const char *file_extensions() const { return "mdv"; }
- virtual const option_guide *create_option_guide() const { return NULL; }
+ virtual const option_guide *create_option_guide() const { return nullptr; }
// specific implementation
DECLARE_WRITE_LINE_MEMBER( clk_w );