1 files changed, 1 insertions, 0 deletions
diff --git a/node.h b/node.h
index a25c4599eb..d8d104975a 100644
--- a/node.h
+++ b/node.h
@@ -67,6 +67,7 @@ void rb_ast_mark(rb_ast_t*);
 void rb_ast_update_references(rb_ast_t*);
 void rb_ast_free(rb_ast_t*);
 void rb_ast_add_mark_object(rb_ast_t*, VALUE);
+void rb_ast_delete_mark_object(rb_ast_t*, VALUE);
 void rb_ast_set_tokens(rb_ast_t*, VALUE);
 NODE *rb_ast_newnode(rb_ast_t*, enum node_type type, size_t size, size_t alignment);
 void rb_ast_delete_node(rb_ast_t*, NODE *n);