diff --git a/core/modules/user/src/AccountForm.php b/core/modules/user/src/AccountForm.php
index e86e980..0965e20 100644
--- a/core/modules/user/src/AccountForm.php
+++ b/core/modules/user/src/AccountForm.php
@@ -351,7 +351,7 @@ public function validate(array $form, FormStateInterface $form_state) {
         // Check whether the user name provided is an email address, if so, make
         // sure it matches the mail value.
         if (\Drupal::config('user.settings')->get('verify_email_match') && (filter_var($name, FILTER_VALIDATE_EMAIL) && ($name !== $mail))) {
-          $this->setFormError('name', $form_state, $this->t('You have provided an email address as a username, but this does not match your email address.'));
+          $form_state->setErrorByName('name', $this->t('You have provided an email address as a username, but this does not match your email address.'));
         }
       }
     }