diff --git a/app/i18n/index.js b/app/i18n/index.js
index 5271638ed..4a2404c3f 100644
--- a/app/i18n/index.js
+++ b/app/i18n/index.js
@@ -101,7 +101,7 @@ function loadTranslation(locale) {
         }
 
         if (momentData) {
-            moment.updateLocale(locale, momentData);
+            moment.updateLocale(locale.toLowerCase(), momentData);
         }
     } catch (e) {
         console.error('NO Translation found', e); //eslint-disable-line no-console