1 files changed, 1 insertions, 1 deletions
diff --git a/debug.c b/debug.c
index be70dafec3..2f1e03cc3a 100644
--- a/debug.c
+++ b/debug.c
@@ -34,7 +34,7 @@ const union {
         RUBY_ENC_CODERANGE_VALID   = ENC_CODERANGE_VALID,
         RUBY_ENC_CODERANGE_BROKEN  = ENC_CODERANGE_BROKEN,
         RUBY_FL_WB_PROTECTED     = FL_WB_PROTECTED,
-        RUBY_FL_OLDGEN      = FL_OLDGEN,
+        RUBY_FL_PROMOTED    = FL_PROMOTED,
         RUBY_FL_FINALIZE    = FL_FINALIZE,
         RUBY_FL_TAINT       = FL_TAINT,
         RUBY_FL_EXIVAR      = FL_EXIVAR,