diff --git a/custom_components/askoheat/switch.py b/custom_components/askoheat/switch.py
index e0e068b..c0eb92e 100644
--- a/custom_components/askoheat/switch.py
+++ b/custom_components/askoheat/switch.py
@@ -229,7 +229,7 @@ def available(self) -> bool:
             and CONF_FEED_IN_ENABLED_SWITCH_ENTITY_DESCRIPTOR.data_key
             in self.coordinator.data
             and EMA_FEED_IN_VALUE_NUMBER_ENTITY_DESCRIPTOR.data_key
-            in self.coordinator.data
+            in self._ema_coordinator.data
         )
 
     @callback