diff --git a/ghost/i18n/lib/i18n.js b/ghost/i18n/lib/i18n.js
index 309428a228..8b4bb70485 100644
--- a/ghost/i18n/lib/i18n.js
+++ b/ghost/i18n/lib/i18n.js
@@ -19,7 +19,7 @@ const SUPPORTED_LOCALES = [
     'no',
     'pl',
     'pt',
-    'pt-br',
+    'pt-BR',
     'ru',
     'si',
     'sl',
diff --git a/ghost/i18n/locales/pt-br/ghost.json b/ghost/i18n/locales/pt-BR/ghost.json
similarity index 100%
rename from ghost/i18n/locales/pt-br/ghost.json
rename to ghost/i18n/locales/pt-BR/ghost.json
diff --git a/ghost/i18n/locales/pt-br/portal.json b/ghost/i18n/locales/pt-BR/portal.json
similarity index 100%
rename from ghost/i18n/locales/pt-br/portal.json
rename to ghost/i18n/locales/pt-BR/portal.json