diff --git a/Climate/bosch_bth-ra_control.yaml b/Climate/bosch_bth-ra_control.yaml
index fe1d44e..05051f6 100644
--- a/Climate/bosch_bth-ra_control.yaml
+++ b/Climate/bosch_bth-ra_control.yaml
@@ -225,7 +225,7 @@ variables:
       false
     {% endif %}
   is_sensor_sync_needed: >
-    {% set current_remote = state_attr(trv, device_class ~ '_temperature') | default(state_attr(remote_temperature_entity, 'state'), none) | float(0) %}
+    {% set current_remote = states('number.heizthermostat_pierre_buro_remote_temperature') | float(0) %}
     {% set new_sensor = states(temperature_sensor) | float(0) %}
     {% set target = safe_temperature | float(0) %}
     {% set diff = (new_sensor - current_remote) | abs %}