diff --git a/site/plugins/admin/lang/ru_RU.json b/site/plugins/admin/lang/ru_RU.json
index cd00962d..86ae9324 100644
--- a/site/plugins/admin/lang/ru_RU.json
+++ b/site/plugins/admin/lang/ru_RU.json
@@ -18,6 +18,7 @@
   "admin_themes": "Темы",
   "admin_help": "Помощь",
   "admin_getting_help": "Документация",
+  "admin_message_json_invalid": "Invalid JSON",
   "admin_logout": "Выход",
   "admin_profile": "Профайл",
   "admin_view_site": "Просмотреть Сайт",