diff -u b/src/PathautoWidget.php b/src/PathautoWidget.php
--- b/src/PathautoWidget.php
+++ b/src/PathautoWidget.php
@@ -80,8 +80,7 @@
   public static function validateFormElement(array &$element, FormStateInterface $form_state) {
     // Make sure the validated alias is unique before passing it to the parent.
     $alias = rtrim(trim($element['alias']['#value']), " \\/");
-    $generate_automatically = (bool) $element["pathauto"]["#value"];
-    if ($alias && $generate_automatically) {
+    if ($alias) {
       /** @var \Drupal\pathauto\AliasUniquifierInterface $alias_uniquifier */
       $alias_uniquifier = \Drupal::service('pathauto.alias_uniquifier');
       $source = $element['source']['#value'];