diff --git a/ChangeLog b/ChangeLog
index 3f77043ce4..c007347fbb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Oct 31 14:09:32 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* vm_method.c (rb_method_entry_make): fix to pass an ISeq value.
+	  OBJ_WRITTEN() accepts only VALUE.
+
 Wed Oct 30 19:07:57 2013  Akinori MUSHA  <knu@iDaemons.org>
 
 	* misc/ruby-additional.el (ruby-brace-to-do-end)
diff --git a/vm_method.c b/vm_method.c
index 239f8b2874..4df1023136 100644
--- a/vm_method.c
+++ b/vm_method.c
@@ -323,7 +323,7 @@ rb_method_entry_make(VALUE klass, ID mid, rb_method_type_t type,
 
 	switch(def->type) {
 	  case VM_METHOD_TYPE_ISEQ:
-	    OBJ_WRITTEN(klass, Qundef, def->body.iseq);
+	    OBJ_WRITTEN(klass, Qundef, def->body.iseq->self);
 	    break;
 	  case VM_METHOD_TYPE_IVAR:
 	    OBJ_WRITTEN(klass, Qundef, def->body.attr.location);