diff --git a/src/i18n/ja.json b/src/i18n/ja_pedantic.json
similarity index 100%
rename from src/i18n/ja.json
rename to src/i18n/ja_pedantic.json
diff --git a/src/i18n/messages.js b/src/i18n/messages.js
index 774a48e0bb..c56ae205aa 100644
--- a/src/i18n/messages.js
+++ b/src/i18n/messages.js
@@ -23,7 +23,7 @@ const messages = {
   he: require('./he.json'),
   hu: require('./hu.json'),
   it: require('./it.json'),
-  ja: require('./ja.json'),
+  ja: require('./ja_pedantic.json'),
   ja_easy: require('./ja_easy.json'),
   ko: require('./ko.json'),
   nb: require('./nb.json'),