diff --git a/config/locales/ja.yml b/config/locales/ja.yml
index 04f390c33..6830d21a2 100644
--- a/config/locales/ja.yml
+++ b/config/locales/ja.yml
@@ -1291,4 +1291,4 @@ ja:
   label_issue_history_notes: コメント
   label_last_tab_visited: 最後に開いたタブ
   field_unique_id: Unique ID
-  text_no_subject: no subject
+  text_no_subject: 題名なし