diff --git a/homelab-ai-bot/data/rag_mode.json b/homelab-ai-bot/data/rag_mode.json
index c34e4d833..70abefaa4 100644
--- a/homelab-ai-bot/data/rag_mode.json
+++ b/homelab-ai-bot/data/rag_mode.json
@@ -1,4 +1,5 @@
 {
   "chat1": false,
-  "chat2": true
+  "chat2": true,
+  "674951792": true
 }
\ No newline at end of file
diff --git a/infra/heizsteuerung/config.yaml b/infra/heizsteuerung/config.yaml
index 6d566c6e5..015cc8ef4 100644
--- a/infra/heizsteuerung/config.yaml
+++ b/infra/heizsteuerung/config.yaml
@@ -99,6 +99,6 @@ zones:
     name: WC unten
     adapter: zigbee_trv
     device_name: heizkoerper_wc_unten
-    source_sensor: ""
+    source_sensor: wc_unten/temp
     setpoint: 18.0
     frost_min_c: 5.0