diff --git a/homeassistant/components/binary_sensor/strings.json b/homeassistant/components/binary_sensor/strings.json
index b86a6374f28..9fac758e168 100644
--- a/homeassistant/components/binary_sensor/strings.json
+++ b/homeassistant/components/binary_sensor/strings.json
@@ -132,7 +132,7 @@
       "name": "Charging",
       "state": {
         "off": "Not charging",
-        "on": "Charging"
+        "on": "[%key:common::state::charging%]"
       }
     },
     "carbon_monoxide": {