diff --git a/reference/constraints/DateTime.rst b/reference/constraints/DateTime.rst
index 56a3777f627..7eeda011892 100644
--- a/reference/constraints/DateTime.rst
+++ b/reference/constraints/DateTime.rst
@@ -3,12 +3,13 @@ DateTime
 
 Validates that a value is a valid "datetime", meaning either a ``DateTime``
 object or a string (or an object that can be cast into a string) that follows
-a valid YYYY-MM-DD HH:MM:SS format.
+a specific format.
 
 +----------------+------------------------------------------------------------------------+
 | Applies to     | :ref:`property or method <validation-property-target>`                 |
 +----------------+------------------------------------------------------------------------+
 | Options        | - `message`_                                                           |
+|                | - `format`_                                                            |
 |                | - `payload`_                                                           |
 +----------------+------------------------------------------------------------------------+
 | Class          | :class:`Symfony\\Component\\Validator\\Constraints\\DateTime`          |
@@ -85,4 +86,16 @@ message
 
 This message is shown if the underlying data is not a valid datetime.
 
+format
+~~~~~~
+
+**type**: ``string`` **default**: ``Y-m-d H:i:s``
+
+.. versionadded:: 2.8
+    The ``format`` option was introduced in Symfony 2.8.
+
+This option allows to validate a custom date format. See `date_create_from_format`_ for formatting options.
+
 .. include:: /reference/constraints/_payload-option.rst.inc
+
+.. _`date_create_from_format`: http://php.net/manual/en/datetime.createfromformat.php