diff --git a/messages/ru-RU.json b/messages/ru-RU.json
index c7f124078..5f89ff45e 100644
--- a/messages/ru-RU.json
+++ b/messages/ru-RU.json
@@ -2717,6 +2717,7 @@
     "healthScheme": "Метод",
     "healthSelectScheme": "Выберите метод",
     "healthCheckPortInvalid": "Порт должен быть в диапазоне от 1 до 65535",
+    "healthCheckHostnameInvalid": "Hostname must not contain whitespace",
     "healthCheckPath": "Путь",
     "healthHostname": "IP / хост",
     "healthPort": "Порт",