diff --git a/src/Controller/Component/SessionComponent.php b/src/Controller/Component/SessionComponent.php
index 9ac264a4860..4387cfedbd8 100644
--- a/src/Controller/Component/SessionComponent.php
+++ b/src/Controller/Component/SessionComponent.php
@@ -117,6 +117,7 @@ public function check($name) {
  * @param array $params Parameters to be sent to layout as view variables
  * @param string $key Message key, default is 'flash'
  * @return void
+ * @deprecated 3.0 Use FlashComponent::set() instead.
  * @link http://book.cakephp.org/2.0/en/core-libraries/components/sessions.html#creating-notification-messages
  */
 	public function setFlash($message, $element = null, array $params = array(), $key = 'flash') {
diff --git a/src/View/Helper/SessionHelper.php b/src/View/Helper/SessionHelper.php
index dcd1d886762..547dca08924 100644
--- a/src/View/Helper/SessionHelper.php
+++ b/src/View/Helper/SessionHelper.php
@@ -111,6 +111,7 @@ public function check($name) {
  * @param array $attrs Additional attributes to use for the creation of this flash message.
  *    Supports the 'params', and 'element' keys that are used in the helper.
  * @return string
+ * @deprecated 3.0 Use FlashHelper::render() instead.
  * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/session.html#SessionHelper::flash
  */
 	public function flash($key = 'flash', $attrs = []) {