diff --git a/wp-includes/class-wp-user.php b/wp-includes/class-wp-user.php
index 2fa64c25fb..5d57a996ff 100644
--- a/wp-includes/class-wp-user.php
+++ b/wp-includes/class-wp-user.php
@@ -305,6 +305,9 @@ class WP_User {
 	/**
 	 * Magic method for setting custom user fields.
 	 *
+	 * This method does not update custom fields in the database. It only stores
+	 * the value on the WP_User instance.
+	 *
 	 * @since 3.3.0
 	 * @access public
 	 *
diff --git a/wp-includes/version.php b/wp-includes/version.php
index ec999d6e08..07ee898183 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34378';
+$wp_version = '4.4-alpha-34379';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.