diff --git a/ChangeLog b/ChangeLog
index 607093478b..59304e9a48 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Sep 11 17:49:36 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* iseq.c: disable ISeq.load. It enabled accidentally at r51794.
+
 Fri Sep 11 11:15:12 2015  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* lib/net/ftp.rb (size, mdtm, system): parse responses according to
diff --git a/iseq.c b/iseq.c
index 283cd28be9..de09949e5e 100644
--- a/iseq.c
+++ b/iseq.c
@@ -2320,9 +2320,9 @@ Init_ISeq(void)
 #if 0 /* TBD */
     rb_define_private_method(rb_cISeq, "marshal_dump", iseqw_marshal_dump, 0);
     rb_define_private_method(rb_cISeq, "marshal_load", iseqw_marshal_load, 1);
-#endif
     /* disable this feature because there is no verifier. */
     rb_define_singleton_method(rb_cISeq, "load", iseq_s_load, -1);
+#endif
     (void)iseq_s_load;
 
     rb_define_singleton_method(rb_cISeq, "compile", iseqw_s_compile, -1);