diff --git a/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php b/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php
index 039523c..09cd564 100644
--- a/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php
+++ b/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php
@@ -127,7 +127,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
 
       $form['remove_groups'][$id] = array(); // to prevent a notice
       if ($id != 1) {
-        $form['remove_groups'][$id] = [
+        $form['remove_groups'][$id] = array(
           '#type' => 'submit',
           '#value' => $this->t('Remove group @group', array('@group' => $id)),
           '#id' => "views-remove-group-$id",
@@ -136,7 +136,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
           ),
           '#group' => $id,
           '#ajax' => ['url' => NULL],
-        ];
+        );
       }
       $group_options[$id] = $id == 1 ? $this->t('Default group') : $this->t('Group @group', array('@group' => $id));
       $form['#group_renders'][$id] = array();
@@ -205,20 +205,19 @@ public function buildForm(array $form, FormStateInterface $form_state) {
         '#title_display' => 'invisible',
         '#type' => 'checkbox',
         '#id' => 'views-removed-' . $id,
-        '#attributes' => ['class' => ['views-remove-checkbox']],
+        '#attributes' => array('class' => array('views-remove-checkbox')),
         '#default_value' => 0,
       );
     }
 
     $view->getStandardButtons($form, $form_state, 'views_ui_rearrange_filter_form');
-
-    $form['actions']['add_group'] = [
+    $form['actions']['add_group'] = array(
       '#type' => 'submit',
       '#value' => $this->t('Create new filter group'),
       '#id' => 'views-add-group',
       '#group' => 'add',
       '#ajax' => ['url' => NULL],
-    ];
+    );
 
     return $form;
   }
diff --git a/core/modules/views_ui/src/Tests/FilterUITest.php b/core/modules/views_ui/src/Tests/FilterUITest.php
index 506658c..046b166 100644
--- a/core/modules/views_ui/src/Tests/FilterUITest.php
+++ b/core/modules/views_ui/src/Tests/FilterUITest.php
@@ -78,7 +78,7 @@ public function testFiltersUI() {
     $this->drupalGet('admin/structure/views/nojs/rearrange-filter/test_filter_groups/page');
     $this->assertNoRaw('<span>Group 3</span>', 'Group 3 has not been added yet.');
 
-        // Create 2 new groups.
+    // Create 2 new groups.
     $this->drupalPostForm(NULL, [], t('Create new filter group'));
     $this->drupalPostForm(NULL, [], t('Create new filter group'));