diff --git a/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php b/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
index ecfece8..9dfd4b8 100644
--- a/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
+++ b/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
@@ -463,6 +463,8 @@ public function submitOptionsForm(&$form, FormStateInterface $form_state) {
     // validation options.
     if (empty($option_values['specify_validation'])) {
       $option_values['validate']['type'] = 'none';
+      // We need to keep the empty array of options for the 'None' plugin as
+      // it will be needed later.
       $option_values['validate']['options'] = ['none' => []];
       $option_values['validate']['fail'] = 'not found';
     }
diff --git a/core/modules/views_ui/src/Tests/ArgumentValidatorTest.php b/core/modules/views_ui/src/Tests/ArgumentValidatorTest.php
index 93da1e7..5b4b982 100644
--- a/core/modules/views_ui/src/Tests/ArgumentValidatorTest.php
+++ b/core/modules/views_ui/src/Tests/ArgumentValidatorTest.php
@@ -49,10 +49,8 @@ public function testSpecifyValidation() {
    * both with and without specify_validation turned on.
    *
    * @param boolean $specify_validation
-   *
-   * @throws \Exception
    */
-  private function saveArgumentHandlerWithValidationOptions($specify_validation) {
+  protected function saveArgumentHandlerWithValidationOptions($specify_validation) {
     $options = array(
       'options[validate][type]' => 'entity---node',
       'options[specify_validation]' => $specify_validation,