diff --git a/src/MD_STD.php b/src/MD_STD.php
index 05bc79d..1ceb69c 100644
--- a/src/MD_STD.php
+++ b/src/MD_STD.php
@@ -354,17 +354,17 @@ final class MD_STD {
         ];
 
         if (isset($_GET['navlang']) and in_array($_GET['navlang'], $allowed_langs, true)) {
-            if (!(setcookie('lang', $_GET['navlang'], $cookie_options))) {
+            if (!(setcookie('__HOST-lang', $_GET['navlang'], $cookie_options))) {
                 throw new Exception("Failed to set language");
             }
             $lang = $_GET['navlang'];
         }
-        else if (isset($_COOKIE['lang']) and in_array($_COOKIE['lang'], $allowed_langs, true)) {
-            $lang = $_COOKIE['lang'];
+        else if (isset($_COOKIE['__HOST-lang']) and in_array($_COOKIE['__HOST-lang'], $allowed_langs, true)) {
+            $lang = $_COOKIE['__HOST-lang'];
         }
         else {
             $lang = self::lang_getfrombrowser($allowed_langs, $default_lang, "", false);
-            if (!(setcookie('lang', $lang, $cookie_options))) {
+            if (!(setcookie('__HOST-lang', $lang, $cookie_options))) {
                 throw new Exception("Failed to set language");
             }
         }