diff --git a/red/api/locales.js b/red/api/locales.js
index 9f49d4bda..84c9eb196 100644
--- a/red/api/locales.js
+++ b/red/api/locales.js
@@ -19,7 +19,7 @@ module.exports = {
     get: function(req,res) {
         var namespace = req.params[0];
         namespace = namespace.replace(/\.json$/,"");
-        var lang = i18n.determineLangFromHeaders(req.acceptedLanguages);
+        var lang = i18n.determineLangFromHeaders(req.acceptedLanguages || []);
         var prevLang = i18n.i.lng();
         i18n.i.setLng(lang, function(){
             var catalog = i18n.catalog(namespace,lang);
diff --git a/red/i18n.js b/red/i18n.js
index 5a101f348..3e0d50f6d 100644
--- a/red/i18n.js
+++ b/red/i18n.js
@@ -125,7 +125,7 @@ function determineLangFromHeaders(acceptedLanguages){
             lang = acceptedLanguages[i];
             break;
         // check the language without the country code
-        } else if (supportedLangs.indexOf(acceptedLangs[i].split("-")[0]) !== -1) {
+        } else if (supportedLangs.indexOf(acceptedLanguages[i].split("-")[0]) !== -1) {
             lang = acceptedLanguages[i].split("-")[0];
             break;
         }