diff --git a/pyhon/appliance.py b/pyhon/appliance.py
index f401f1f..ca0cef6 100644
--- a/pyhon/appliance.py
+++ b/pyhon/appliance.py
@@ -13,7 +13,6 @@ from pyhon.commands import HonCommand
 from pyhon.parameter.base import HonParameter
 from pyhon.parameter.enum import HonParameterEnum
 from pyhon.parameter.range import HonParameterRange
-from pyhon.parameter.fixed import HonParameterFixed
 from pyhon.typedefs import Parameter
 
 if TYPE_CHECKING:
diff --git a/pyhon/appliances/wh.py b/pyhon/appliances/wh.py
index a3cee95..7e92ca8 100644
--- a/pyhon/appliances/wh.py
+++ b/pyhon/appliances/wh.py
@@ -3,13 +3,14 @@ from typing import Any, Dict
 from pyhon.appliances.base import ApplianceBase
 from pyhon.parameter.base import HonParameter
 
+
 class Appliance(ApplianceBase):
     def attributes(self, data: Dict[str, Any]) -> Dict[str, Any]:
         data = super().attributes(data)
         parameter = data["parameters"]["onOffStatus"]
-        data["active"] = parameter.value == 1 if isinstance(parameter, HonParameter) else parameter == 1
-
+        is_class = isinstance(parameter, HonParameter)
+        data["active"] = parameter.value == 1 if is_class else parameter == 1
         return data
-    
+
     def settings(self, settings: Dict[str, Any]) -> Dict[str, Any]:
-        return settings
\ No newline at end of file
+        return settings