diff --git a/custom_components/econet300/common_functions.py b/custom_components/econet300/common_functions.py
index 96a93bf..fc1db06 100644
--- a/custom_components/econet300/common_functions.py
+++ b/custom_components/econet300/common_functions.py
@@ -1,4 +1,5 @@
 """Functionsd used in Econet300 integration,."""
+
 import re
 
 
@@ -9,7 +10,7 @@ def camel_to_snake(key: str) -> str:
 
 
 def get_key_by_value(search_dict: dict, search_value: str) -> str:
-    """Get a key from a dict by passing its value"""
+    """Get a key from a dict by passing its value."""
     for key, value in search_dict.items():
         if value == search_value:
             return key
diff --git a/custom_components/econet300/sensor.py b/custom_components/econet300/sensor.py
index ea8c97c..fddc528 100644
--- a/custom_components/econet300/sensor.py
+++ b/custom_components/econet300/sensor.py
@@ -1,4 +1,5 @@
 """Sensor for Econet300."""
+
 from collections.abc import Callable
 from dataclasses import dataclass
 import logging
@@ -20,11 +21,11 @@
     ENTITY_PRECISION,
     ENTITY_UNIT_MAP,
     ENTITY_VALUE_PROCESSOR,
+    MIXER_MAP,
     SENSOR_MAP,
     SERVICE_API,
     SERVICE_COORDINATOR,
     STATE_CLASS_MAP,
-    MIXER_MAP,
 )
 from .entity import EconetEntity, MixerEntity