diff --git a/local/modules/Tinymce/Smarty/TinyMCELanguage.php b/local/modules/Tinymce/Smarty/TinyMCELanguage.php
new file mode 100644
index 000000000..9f108d7fa
--- /dev/null
+++ b/local/modules/Tinymce/Smarty/TinyMCELanguage.php
@@ -0,0 +1,65 @@
+<?php
+/*************************************************************************************/
+/*      This file is part of the Thelia package.                                     */
+/*                                                                                   */
+/*      Copyright (c) OpenStudio                                                     */
+/*      email : dev@thelia.net                                                       */
+/*      web : http://www.thelia.net                                                  */
+/*                                                                                   */
+/*      For the full copyright and license information, please view the LICENSE.txt  */
+/*      file that was distributed with this source code.                             */
+/*************************************************************************************/
+
+namespace Tinymce\Smarty;
+
+use Symfony\Component\Finder\Finder;
+use Symfony\Component\Finder\SplFileInfo;
+use Thelia\Core\HttpFoundation\Request;
+use Thelia\Core\HttpFoundation\Session\Session;
+use Thelia\Core\Template\Smarty\AbstractSmartyPlugin;
+use Thelia\Core\Template\Smarty\SmartyPluginDescriptor;
+
+class TinyMCELanguage extends AbstractSmartyPlugin
+{
+    /** @var  string $locale */
+    private $locale;
+
+    public function __construct(Request $request)
+    {
+        $this->locale = $request->getSession()->getLang()->getLocale();
+    }
+
+    public function guessTinyMCELanguage($params, \Smarty_Internal_Template $template)
+    {
+        // Find TinyMCE available languages
+        $finder = new Finder();
+
+        $files = $finder->in(__DIR__.DS."..".DS."Resources".DS.'js'.DS.'tinymce'.DS.'langs')->sortByName();
+
+        $miniLocale = substr($this->locale, 0, 2);
+
+        // Find the best matching language
+        /** @var SplFileInfo $file */
+        foreach($files as $file) {
+            $lang = str_replace('.js', '', $file->getFilename());
+
+            if ($lang == $this->locale || $lang == $miniLocale) {
+                return $lang;
+            }
+        }
+
+        return '';
+     }
+
+    /**
+     * Define the various smarty plugins hendled by this class
+     *
+     * @return array an array of smarty plugin descriptors
+     */
+    public function getPluginDescriptors()
+    {
+        return array(
+            new SmartyPluginDescriptor('function', 'tinymce_lang', $this, 'guessTinyMCELanguage'),
+        );
+    }
+}
\ No newline at end of file