diff --git a/app/code/Magento/Customer/Model/AuthenticationInterface.php b/app/code/Magento/Customer/Model/AuthenticationInterface.php
index bc99337f3b8bf..f2d213be2ccfe 100644
--- a/app/code/Magento/Customer/Model/AuthenticationInterface.php
+++ b/app/code/Magento/Customer/Model/AuthenticationInterface.php
@@ -10,7 +10,7 @@
 
 /**
  * Interface \Magento\Customer\Model\AuthenticationInterface
- *
+ * @api
  */
 interface AuthenticationInterface
 {