diff --git a/lib/extension/homeassistant.js b/lib/extension/homeassistant.js
index 7a4b192d0..7093f7d0c 100644
--- a/lib/extension/homeassistant.js
+++ b/lib/extension/homeassistant.js
@@ -170,6 +170,7 @@ const configurations = {
         type: 'sensor',
         object_id: 'linkquality',
         discovery_payload: {
+            unit_of_measurement: 'RSSI',
             value_template: '{{ value_json.linkquality }}',
         },
     },