diff --git a/ThermiaOnlineAPI/model/HeatPump.py b/ThermiaOnlineAPI/model/HeatPump.py
index 61f8d56..007ac40 100644
--- a/ThermiaOnlineAPI/model/HeatPump.py
+++ b/ThermiaOnlineAPI/model/HeatPump.py
@@ -357,7 +357,7 @@ def __get_operational_statuses_from_operational_status(self) -> Optional[Dict]:
         if data is not None:
             return {
                 "registerValues": data.get("valueNames", []),
-                "valueNamePrefix": "COMP_STATUS_",
+                "valueNamePrefix": "COMP_VALUE_",
             }
 
         # Try to get the data from the REG_OPERATIONAL_STATUS_PRIORITY_BITMASK register