diff --git a/reference/datetime/constants.xml b/reference/datetime/constants.xml
index 6c5c41310..1d77c72d4 100644
--- a/reference/datetime/constants.xml
+++ b/reference/datetime/constants.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- EN-Revision: 6bbb5b9685d27ac9df744702e06525047a163d4b Maintainer: tmn Status: ready -->
+<!-- EN-Revision: b53f03f249fca24b7b1f32564e7dde31fa8b713e Maintainer: tmn Status: ready -->
 <!-- Reviewed: no -->
 <appendix xml:id="datetime.constants" xmlns="http://docbook.org/ns/docbook">
  &reftitle.constants;
@@ -68,7 +68,7 @@
    <listitem>
     <simpara>
      Дата и время в формате Atom (пример: <literal>2005-08-15T15:52:01+00:00</literal>).
-     совместимо с ISO-8601, RFC 3399 и XML Schema.
+     совместимо с ISO-8601, RFC 3339 и XML Schema.
     </simpara>
    </listitem>
   </varlistentry>