1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index fc17da98d5..36424437f9 100644
--- a/internal.h
+++ b/internal.h
@@ -715,6 +715,7 @@ rb_float_new_inline(double d)
 
 /* object.c */
 VALUE rb_obj_equal(VALUE obj1, VALUE obj2);
+VALUE rb_class_search_ancestor(VALUE klass, VALUE super);
 
 struct RBasicRaw {
     VALUE flags;