diff --git a/docs/typecasting.rst b/docs/typecasting.rst
index fecc473cf4..21770174a7 100644
--- a/docs/typecasting.rst
+++ b/docs/typecasting.rst
@@ -37,16 +37,7 @@ You must remember that type-casting is a two-way operation. If you are
 introducing your own types, you will need to make sure they can be saved and
 loaded correctly.
 
-Some formats such as `date`, `time` and `datetime` may have additional options
-to it::
-
-    $m->addField('registered', [
-        'type' => 'date',
-        'persist_format' => 'd/m/Y',
-        'persist_timezone' => 'IST',
-    ]);
-
-Here is another example with booleans::
+Some types such as `boolean` may support additional options like::
 
     $m->addField('is_married', [
         'type' => 'boolean',
diff --git a/src/Model/FieldPropertiesTrait.php b/src/Model/FieldPropertiesTrait.php
index 68fbe73775..db7320d15d 100644
--- a/src/Model/FieldPropertiesTrait.php
+++ b/src/Model/FieldPropertiesTrait.php
@@ -107,15 +107,6 @@ trait FieldPropertiesTrait
      */
     public $required = false;
 
-    /**
-     * Persisting format for type = 'date', 'datetime', 'time' fields.
-     *
-     * For example, for date it can be 'Y-m-d', for datetime - 'Y-m-d H:i:s.u' etc.
-     *
-     * @var string
-     */
-    public $persist_format;
-
     /**
      * Persisting timezone for type = 'date', 'datetime', 'time' fields.
      *