diff --git a/custom_components/hildebrand_glow_ihd_mqtt/sensor.py b/custom_components/hildebrand_glow_ihd_mqtt/sensor.py
index b574602..1b9fd01 100755
--- a/custom_components/hildebrand_glow_ihd_mqtt/sensor.py
+++ b/custom_components/hildebrand_glow_ihd_mqtt/sensor.py
@@ -66,7 +66,7 @@
   {
     "name": "Smart Meter IHD HAN LQI",
     "device_class": None,
-    "unit_of_measurement": PERCENTAGE,
+    "unit_of_measurement": None,
     "state_class": SensorStateClass.MEASUREMENT,
     "entity_category": EntityCategory.DIAGNOSTIC,
     "icon": "mdi:wifi-strength-outline",