Merge remote-tracking branch 'mruby/master'

1 files changed, 2 insertions, 1 deletions

diff --git a/src/object.c b/src/object.c
index c5fb74575..2e0bd245f 100644
--- a/src/object.c
+++ b/src/object.c
@@ -428,7 +428,7 @@ mrb_check_type(mrb_state *mrb, mrb_value x, enum mrb_vtype t)
  *  Returns a string representing <i>obj</i>. The default
  *  <code>to_s</code> prints the object's class and an encoding of the
  *  object id. As a special case, the top-level object that is the
- *  initial execution context of Ruby programs returns ``main.''
+ *  initial execution context of Ruby programs returns "main."
  */
 
 MRB_API mrb_value
@@ -487,6 +487,7 @@ mrb_obj_is_kind_of(mrb_state *mrb, mrb_value obj, struct RClass *c)
       mrb_raise(mrb, E_TYPE_ERROR, "class or module required");
   }
 
+  MRB_CLASS_ORIGIN(c);
   while (cl) {
     if (cl == c || cl->mt == c->mt)
       return TRUE;