diff --git a/config.xml b/config.xml
index 49fe122..cf023f0 100644
--- a/config.xml
+++ b/config.xml
@@ -2,7 +2,7 @@
 <module>
     <name>ps_imageslider</name>
     <displayName><![CDATA[Image slider]]></displayName>
-    <version><![CDATA[3.1.4]]></version>
+    <version><![CDATA[3.2.0]]></version>
     <description><![CDATA[Adds an image slider to your site.]]></description>
     <author><![CDATA[PrestaShop]]></author>
     <tab><![CDATA[front_office_features]]></tab>
diff --git a/controllers/admin/AdminConfigureSlidesController.php b/controllers/admin/AdminConfigureSlidesController.php
index 13a9954..5abef0f 100644
--- a/controllers/admin/AdminConfigureSlidesController.php
+++ b/controllers/admin/AdminConfigureSlidesController.php
@@ -19,32 +19,30 @@
  */
 class AdminConfigureSlidesController extends ModuleAdminController
 {
-    public $module;
-
-    /**
-     * This function allow to delete users
-     */
     public function ajaxProcessUpdateSlidesPosition()
     {
-		$home_slider = $this->module;
-		$slides = [];
-
-		if (!Tools::isSubmit('secure_key') || Tools::getValue('secure_key') != $home_slider->secure_key || !Tools::getValue('action')) {
-        	$this->ajaxDie(json_encode(['error' => true]));
-		}
+        if (empty(Tools::getValue('action')) || Tools::getValue('action') != 'updateSlidesPosition' || empty(Tools::getValue('slides'))) {
+            ob_end_clean();
+            header('Content-Type: application/json');
+            $this->ajaxRender(json_encode(['error' => true]));
+            exit;
+        }
 
-		if (Tools::getValue('action') == 'updateSlidesPosition' && Tools::getValue('slides')) {
-		    $slides = Tools::getValue('slides');
-
-		    foreach ($slides as $position => $id_slide) {
-		        $res = Db::getInstance()->execute('
+        // Get slides and update their position
+        $slides = Tools::getValue('slides');
+        foreach ($slides as $position => $id_slide) {
+            Db::getInstance()->execute('
 					UPDATE `' . _DB_PREFIX_ . 'homeslider_slides` SET `position` = ' . (int) $position . '
 					WHERE `id_homeslider_slides` = ' . (int) $id_slide
-		        );
-		    }
+                );
+        }
+
+        // Wipe module cache
+        $this->module->clearCache();
 
-		    $home_slider->clearCache();
-		}
-        	$this->ajaxDie(json_encode(['success' => true]));
+        ob_end_clean();
+        header('Content-Type: application/json');
+        $this->ajaxRender(json_encode(['success' => true]));
+        exit;
     }
 }
diff --git a/controllers/index.php b/controllers/index.php
deleted file mode 100644
index 36c7d1f..0000000
--- a/controllers/index.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-/**
- * Copyright since 2007 PrestaShop SA and Contributors
- * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
- *
- * NOTICE OF LICENSE
- *
- * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
- * that is bundled with this package in the file LICENSE.md.
- * It is also available through the world-wide-web at this URL:
- * https://opensource.org/licenses/AFL-3.0
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@prestashop.com so we can send you a copy immediately.
- *
- * @author    PrestaShop SA <contact@prestashop.com>
- * @copyright Since 2007 PrestaShop SA and Contributors
- * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
- */
-header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
-header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
-
-header('Cache-Control: no-store, no-cache, must-revalidate');
-header('Cache-Control: post-check=0, pre-check=0', false);
-header('Pragma: no-cache');
-
-header('Location: ../');
-exit;
diff --git a/ps_imageslider.php b/ps_imageslider.php
index 27cf27c..5d4e5e7 100644
--- a/ps_imageslider.php
+++ b/ps_imageslider.php
@@ -48,15 +48,11 @@ class Ps_ImageSlider extends Module implements WidgetInterface
      */
     public $secure_key;
 
-    public $adminControllers = [
-        'adminConfigureSlides' => 'AdminConfigureSlides',
-    ];
-
     public function __construct()
     {
         $this->name = 'ps_imageslider';
         $this->tab = 'front_office_features';
-        $this->version = '3.1.4';
+        $this->version = '3.2.0';
         $this->author = 'PrestaShop';
         $this->need_instance = 0;
         $this->secure_key = Tools::hash($this->name);
@@ -79,6 +75,7 @@ public function install()
         /* Adds Module */
         if (
             parent::install() &&
+            $this->installTab() &&
             $this->registerHook('displayHeader') &&
             $this->registerHook('displayHome') &&
             $this->registerHook('actionShopDataDuplication')
@@ -129,6 +126,21 @@ public function install()
         return false;
     }
 
+    public function installTab()
+    {
+        $tab = new Tab();
+        $tab->class_name = 'AdminConfigureSlides';
+        $tab->module = $this->name;
+        $tab->active = true;
+        $tab->id_parent = -1;
+        $tab->name = array_fill_keys(
+            Language::getIDs(false),
+            $this->displayName
+        );
+
+        return $tab->add();
+    }
+
     /**
      * Adds samples
      */
@@ -162,6 +174,9 @@ public function uninstall()
             /* Deletes tables */
             $res = $this->deleteTables();
 
+            /* Delete hidden tab */
+            $res &= $this->uninstallTab();
+
             /* Unsets configuration */
             $res &= Configuration::deleteByName('HOMESLIDER_SPEED');
             $res &= Configuration::deleteByName('HOMESLIDER_PAUSE_ON_HOVER');
@@ -173,6 +188,18 @@ public function uninstall()
         return false;
     }
 
+    public function uninstallTab()
+    {
+        $result = true;
+        $id_tab = (int) Tab::getIdFromClassName('AdminConfigureSlides');
+        $tab = new Tab($id_tab);
+        if (Validate::isLoadedObject($tab)) {
+            $result = $tab->delete();
+        }
+
+        return $result;
+    }
+
     /**
      * Creates tables
      */
@@ -617,6 +644,7 @@ public function hookActionShopDataDuplication($params)
 
     public function headerHTML()
     {
+        // Run only on module configuration page
         if ('AdminModules' !== Tools::getValue('controller') ||
             Tools::getValue('configure') !== $this->name ||
             Tools::getIsset('id_slide') ||
@@ -625,6 +653,7 @@ public function headerHTML()
         }
 
         $this->context->controller->addJS($this->_path . 'js/Sortable.min.js');
+
         /* Style & js for fieldset 'slides configuration' */
         $html = '<script type="text/javascript">
               $(function() {
@@ -637,14 +666,12 @@ public function headerHTML()
                     var ajaxCallParameters = {
                         ajax: true,
                         action: "updateSlidesPosition",
-                        secure_key: "'.$this->secure_key.'",
-                        token: "'.Tools::getAdminTokenLite('AdminConfigureSlides') .'",
                         slides: sortableIdsAsData
                     };
                     $.ajax({
                       type: "POST",
                       cache: false,
-                      url: "'.$this->context->link->getAdminLink('AdminConfigureSlides', false).'",
+                      url: "' . $this->context->link->getAdminLink('AdminConfigureSlides') . '",
                       data: ajaxCallParameters
                     });
                   }
diff --git a/controllers/admin/index.php b/upgrade/upgrade-3.2.0.php
similarity index 66%
rename from controllers/admin/index.php
rename to upgrade/upgrade-3.2.0.php
index 36c7d1f..6e54416 100644
--- a/controllers/admin/index.php
+++ b/upgrade/upgrade-3.2.0.php
@@ -1,7 +1,6 @@
 <?php
 /**
  * Copyright since 2007 PrestaShop SA and Contributors
- * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
  *
  * NOTICE OF LICENSE
  *
@@ -16,13 +15,13 @@
  * @author    PrestaShop SA <contact@prestashop.com>
  * @copyright Since 2007 PrestaShop SA and Contributors
  * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
+ * International Registered Trademark & Property of PrestaShop SA
  */
-header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
-header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
+if (!defined('_PS_VERSION_')) {
+    exit;
+}
 
-header('Cache-Control: no-store, no-cache, must-revalidate');
-header('Cache-Control: post-check=0, pre-check=0', false);
-header('Pragma: no-cache');
-
-header('Location: ../');
-exit;
+function upgrade_module_3_2_0($object)
+{
+    return $object->installTab();
+}