diff --git a/src/Pluf/L10n.php b/src/Pluf/L10n.php
index daf9b6e..209125c 100644
--- a/src/Pluf/L10n.php
+++ b/src/Pluf/L10n.php
@@ -577,7 +577,7 @@ class Pluf_L10n
         $l = array();
         $nl = self::getNativeLanguages();
         foreach (Pluf::f('languages', array('en')) as $lang) {
-            $l[$nl[$lang]] = $lang;
+            $l[mb_convert_case($nl[$lang], MB_CASE_TITLE, 'UTF-8')] = $lang;
         }
         return $l;
     }