diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
index c4147a5..3805cfd 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
@@ -340,6 +340,7 @@ public function buildOptionsForm(&$form, &$form_state) {
                 ),
               ),
               '#id' => 'edit-options-validate-options-' . $id,
+              '#default_value' => array(),
             );
             $plugin->buildOptionsForm($form['validate']['options'][$id], $form_state);
             $validate_types[$id] = $info['title'];