diff --git a/src/Plugin/views/exposed_form/VeflBasic.php b/src/Plugin/views/exposed_form/VeflBasic.php
index 8d1f08f..f911098 100644
--- a/src/Plugin/views/exposed_form/VeflBasic.php
+++ b/src/Plugin/views/exposed_form/VeflBasic.php
@@ -24,13 +24,13 @@ class VeflBasic extends Basic {
    */
   protected function defineOptions() {
     $options = parent::defineOptions();
-    $options['layout'] = array(
-      'contains' => array(
-        'layout_id' => array('default' => 'vefl_onecol'),
-        'regions' => array('default' => array()),
-        'widget_region' => array('default' => array()),
-      ),
-    );
+    $options['layout'] = [
+      'contains' => [
+        'layout_id' => ['default' => 'vefl_onecol'],
+        'regions' => ['default' => []],
+        'widget_region' => ['default' => []],
+      ],
+    ];
     return $options;
   }
 
@@ -44,23 +44,23 @@ class VeflBasic extends Basic {
     $layouts = Vefl::getLayouts();
 
     // Outputs layout selectbox.
-    $form['layout'] = array(
+    $form['layout'] = [
       '#type' => 'details',
       '#title' => $this->t('Layout settings'),
-    );
-    $form['layout']['layout_id'] = array(
+    ];
+    $form['layout']['layout_id'] = [
       '#prefix' => '<div class="container-inline">',
       '#type' => 'select',
       '#options' => Vefl::getLayoutOptions($layouts),
       '#title' => t('Layout'),
       '#default_value' => $layout_id,
-    );
-    $form['layout']['change'] = array(
+    ];
+    $form['layout']['change'] = [
       '#type' => 'submit',
       '#value' => t('Change'),
-      '#submit' => array(array($this, 'updateRegions')),
+      '#submit' => [[$this, 'updateRegions']],
       '#suffix' => '</div>',
-    );
+    ];
     $form['layout']['widget_region'] = VeflBasic::getRegionElements($layout_id, $layouts);
   }
 
@@ -69,24 +69,24 @@ class VeflBasic extends Basic {
    * @param array $layouts
    * @return array
    */
-  private function getRegionElements($layout_id, $layouts = array()) {
+  private function getRegionElements($layout_id, $layouts = []) {
 
-    $element = array(
+    $element = [
       '#prefix' => '<div id="edit-block-region-wrapper">',
       '#suffix' => '</div>',
-    );
+    ];
     // Outputs regions selectbox for each filter.
-    $types = array(
+    $types = [
       'filters' => $this->view->display_handler->getHandlers('filter'),
       'actions' => Vefl::getFormActions(),
-    );
+    ];
 
     // Adds additional action for BEF combined sort. @todo
 //    if (!empty($vars['widgets']['sort-sort_bef_combine'])) {
 //      $actions[] = 'sort-sort_bef_combine';
 //    }
 
-    $regions = array();
+    $regions = [];
     foreach ($layouts[$layout_id]['regions'] as $region_id => $region) {
       $regions[$region_id] = $region['label'];
     }
@@ -99,11 +99,11 @@ class VeflBasic extends Basic {
           $filter = $filter->definition['title'];
         }
 
-        $element[$id] = array(
+        $element[$id] = [
           '#type' => 'select',
           '#title' => $filter,
           '#options' => $regions,
-        );
+        ];
 
         // Set default region for chosen layout.
         if (!empty($this->options['layout']['widget_region'][$id]) && !empty($regions[$this->options['layout']['widget_region'][$id]])) {
diff --git a/src/Vefl.php b/src/Vefl.php
index 24c1f74..523adf6 100644
--- a/src/Vefl.php
+++ b/src/Vefl.php
@@ -25,13 +25,13 @@ class Vefl {
   /**
    * Gets Display Suite layouts.
    */
-  public static function getLayoutOptions($layouts = array()) {
+  public static function getLayoutOptions($layouts = []) {
     if (empty($layouts)) {
       $layouts = Vefl::getLayouts();
     }
 
     // Converts layouts array to options.
-    $layout_options = array();
+    $layout_options = [];
     foreach ($layouts as $key => $layout_definition) {
       $optgroup = t('Other');
 
@@ -41,7 +41,7 @@ class Vefl {
       }
 
       if (!isset($layout_options[$optgroup])) {
-        $layout_options[$optgroup] = array();
+        $layout_options[$optgroup] = [];
       }
 
       // Stack the layout.
@@ -59,14 +59,14 @@ class Vefl {
    * Returns action fields for views exposed form.
    */
   public static function getFormActions() {
-    $actions = array(
+    $actions = [
       'sort_by' => t('Sort by'),
       'sort_order' => t('Sort order'),
       'items_per_page' => t('Items per page'),
       'offset' => t('Offset'),
       'submit' => t('Submit button'),
       'reset' => t('Reset button'),
-    );
+    ];
     return $actions;
   }
 }
diff --git a/vefl.module b/vefl.module
index f33c15e..d0365d6 100644
--- a/vefl.module
+++ b/vefl.module
@@ -11,11 +11,11 @@ use Drupal\layout_plugin\Layout;
  * Implements hook_theme().
  */
 function vefl_theme() {
-  $hooks = array();
-  $hooks['vefl_views_exposed_form'] = array(
+  $hooks = [];
+  $hooks['vefl_views_exposed_form'] = [
     'render element' => 'form',
     'theme path' => drupal_get_path('module', 'vefl'),
-  );
+  ];
   return $hooks;
 }
 
@@ -25,7 +25,7 @@ function vefl_theme() {
 function vefl_theme_registry_alter(&$theme_registry) {
   // Inserts default views preprocess function before vefl preprocess function.
   $before = array_search('template_preprocess_vefl_views_exposed_form', $theme_registry['vefl_views_exposed_form']['preprocess functions']);
-  array_splice($theme_registry['vefl_views_exposed_form']['preprocess functions'], $before, 0, array('template_preprocess_views_exposed_form'));
+  array_splice($theme_registry['vefl_views_exposed_form']['preprocess functions'], $before, 0, ['template_preprocess_views_exposed_form']);
 }
 
 /**