diff --git a/ChangeLog b/ChangeLog
index 52d9613668..690201d6da 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Aug 14 14:54:14 2016  Kouhei Sutou  <kou@cozmixng.org>
+
+	* object.c (InitVM_Object): Update referenced document path.
+
 Sat Aug 13 23:08:01 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* numeric.c (num_funcall0, num_funcall1): get rid of infinite
diff --git a/object.c b/object.c
index d09c2444aa..d265d9ff9e 100644
--- a/object.c
+++ b/object.c
@@ -3581,7 +3581,7 @@ InitVM_Object(void)
      * Document-class: Data
      *
      * This is a recommended base class for C extensions using Data_Make_Struct
-     * or Data_Wrap_Struct, see README.EXT for details.
+     * or Data_Wrap_Struct, see doc/extension.rdoc for details.
      */
     rb_cData = rb_define_class("Data", rb_cObject);
     rb_undef_alloc_func(rb_cData);