diff --git a/langs/ja.json b/langs/ja.json
index df56719..34412e9 100644
--- a/langs/ja.json
+++ b/langs/ja.json
@@ -1,7 +1,7 @@
 {
     "common": {
         "cancel": "キャンセル",
-        "unknown": "不明",
+        "unknown": "未知",
         "beta": "ベータ",
         "ok": "OK",
         "edit": "編集",