Improve consistency of bool/true/false

1 files changed, 1 insertions, 1 deletions

diff --git a/hash.c b/hash.c
index 84ab343091..e11afb04cd 100644
--- a/hash.c
+++ b/hash.c
@@ -4719,7 +4719,7 @@ env_delete(VALUE name)
 	    RB_GC_GUARD(name);
 	}
 	else if (ENVMATCH(nam, TZ_ENV)) {
-	    ruby_tz_uptodate_p = FALSE;
+	    ruby_tz_uptodate_p = false;
 	}
 	return value;
     }