diff --git a/public/locales/ja/common.json b/public/locales/ja/common.json
index d1198d141..fc1a1a260 100644
--- a/public/locales/ja/common.json
+++ b/public/locales/ja/common.json
@@ -73,7 +73,8 @@
         "wlan_users": "WLAN Users",
         "up": "UP",
         "down": "DOWN",
-        "wait": "Please wait"
+        "wait": "Please wait",
+        "empty_data": "Subsystem status unknown"
     },
     "docker": {
         "rx": "RX",