diff --git a/static/lang/ja-JP.json b/static/lang/ja-jp.json
similarity index 100%
rename from static/lang/ja-JP.json
rename to static/lang/ja-jp.json
diff --git a/static/lang/languages.json b/static/lang/languages.json
index eeb82d0..e0cf68b 100644
--- a/static/lang/languages.json
+++ b/static/lang/languages.json
@@ -1,4 +1,4 @@
 {
-	"languages": ["en-us"],
+	"languages": ["en-us", "fr-fr", "de-de", "ja-jp"],
 	"defaultLanguage": "en-us"
 }