diff --git a/lib/homeassistant.js b/lib/homeassistant.js
index 334fdcf31..51c4ab6e3 100644
--- a/lib/homeassistant.js
+++ b/lib/homeassistant.js
@@ -264,6 +264,7 @@ function discover(deviceID, model, mqtt) {
 
         // Set unique names in cases this device produces multiple entities in homeassistant.
         payload.name = mapping[model].length > 1 ? `${friendlyName}_${config.object_id}` : friendlyName;
+        payload.unique_id = `${deviceID}_${config.object_id}_${settings.get().mqtt.base_topic}`;
 
         if (payload.command_topic) {
             payload.command_topic = `${settings.get().mqtt.base_topic}/${friendlyName}/`;