diff --git a/htdocs/index.php b/htdocs/index.php
index 25a47a6a..666dc700 100644
--- a/htdocs/index.php
+++ b/htdocs/index.php
@@ -26,12 +26,11 @@
 #==============================================================================
 # Language
 #==============================================================================
-require_once("../lib/detectbrowserlanguage.php");
 # Available languages
 $files = glob("../lang/*.php");
 $languages = str_replace(".inc.php", "", $files);
 $languages = str_replace("../lang/", "", $languages);
-$lang = detectLanguage($lang, $allowed_lang ? array_intersect($languages,$allowed_lang) : $languages);
+$lang = \Ltb\Language::detect_language($lang, $allowed_lang ? array_intersect($languages,$allowed_lang) : $languages);
 require_once("../lang/$lang.inc.php");
 
 # Remove default questions
diff --git a/lib/detectbrowserlanguage.php b/lib/detectbrowserlanguage.php
deleted file mode 100644
index 6d4111aa..00000000
--- a/lib/detectbrowserlanguage.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-/**
- * detect the preferred language of the user agent
- *
- * @copyright Roy Kaldung <roy@kaldung.com>
- * @license http://www.php.net/license/3_01.txt PHP license
- */
-
-/**
- * split request header Accept-Language to determine the UserAgent's
- * prefered language
- *
- * @param string $defaultLanguage preselected default language
- * @return string returns the default language or a match from $availableLanguages
- */
-function detectLanguage($defaultLanguage, $availableLanguages)
-{
-    $acceptedLanguages = filter_input(INPUT_SERVER, 'HTTP_ACCEPT_LANGUAGE', FILTER_SANITIZE_STRING);
-    $languageList      = explode(',', $acceptedLanguages);
-    $choosenLanguage= $defaultLanguage;
-    foreach($languageList as $currentLanguage) {
-        $currentLanguage = explode(';', $currentLanguage);
-        if (preg_match('/(..)-?.*/', $currentLanguage[0], $reg)) {
-            foreach($reg as $checkLang) {
-                if ($match = preg_grep('/'.$checkLang.'/i', $availableLanguages)) {
-                    $choosenLanguage= $match[key($match)];
-                    break 2;
-                }
-            }
-        }
-    }
-    return $choosenLanguage;
-}
-
- /**
-  * vim: sts=4 ts=4 sw=4 cindent fdm=marker expandtab nu
-  */