diff -u b/core/includes/common.inc b/core/includes/common.inc
--- b/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -286,10 +286,10 @@
  *   TRUE if the address is in a valid format.
  *
  * @deprecated in Drupal 8.0.x-dev, will be removed before Drupal 9.0.0.
- *   Use \Drupal::emailValidator()->isValid().
+ *   Use \Drupal::service('email.validator')->isValid().
  */
 function valid_email_address($mail) {
-  return \Drupal::emailValidator()->isValid($mail);
+  return \Drupal::service('email.validator')->isValid($mail);
 }
 
 /**
reverted:
--- b/core/lib/Drupal.php
+++ a/core/lib/Drupal.php
@@ -647,14 +647,4 @@
     return static::$container->get('access_manager');
   }
 
-  /**
-   * Returns the email validator service.
-   *
-   * @return \Egulias\EmailValidator\EmailValidator
-   *   The email validator service.
-   */
-  public static function emailValidator() {
-    return static::$container->get('email.validator');
-  }
-
 }