diff --git a/static/js/appearanceDialog.js b/static/js/appearanceDialog.js
index 86aede45..def2e3f0 100644
--- a/static/js/appearanceDialog.js
+++ b/static/js/appearanceDialog.js
@@ -33,7 +33,7 @@ pandora.ui.appearanceDialog = function() {
                     }),
                 Ox.Select({
                         id: 'locale',
-                        items: Object.keys(Ox.LOCALE_NAMES).map(function(locale) {
+                        items: pandora.site.languages.map(function(locale) {
                             return {id: locale, title: Ox.LOCALE_NAMES[locale]}
                         }),
                         label: Ox._('Language'),
diff --git a/static/js/preferencesDialog.js b/static/js/preferencesDialog.js
index 02cf4999..6a7fe4ca 100644
--- a/static/js/preferencesDialog.js
+++ b/static/js/preferencesDialog.js
@@ -121,7 +121,7 @@ pandora.ui.preferencesDialog = function() {
                                     }),
                                 Ox.Select({
                                         id: 'locale',
-                                        items: Object.keys(Ox.LOCALE_NAMES).map(function(locale) {
+                                        items: pandora.site.languages.map(function(locale) {
                                             return {id: locale, title: Ox.LOCALE_NAMES[locale]}
                                         }),
                                         label: Ox._('Language'),
diff --git a/static/js/utils.js b/static/js/utils.js
index 04d5e680..345d2746 100644
--- a/static/js/utils.js
+++ b/static/js/utils.js
@@ -2204,7 +2204,7 @@ pandora.setLocale = function(locale, callback) {
     var url;
     // language from http header might not be supported,
     // fall back to site default
-    if (Ox.isUndefined(Ox.LOCALE_NAMES[locale])) {
+    if (pandora.site.languages.indexOf(locale) == -1) {
         locale = pandora.site.user.ui.locale;
     }
     if (locale != 'en') {