diff --git a/homeassistant/components/sensor/xiaomi_aqara.py b/homeassistant/components/sensor/xiaomi_aqara.py
index 33517e957b9..1859b7be16a 100644
--- a/homeassistant/components/sensor/xiaomi_aqara.py
+++ b/homeassistant/components/sensor/xiaomi_aqara.py
@@ -107,5 +107,8 @@ class XiaomiSensor(XiaomiDevice):
             return False
         if self._data_key == 'pressure' and value == 0:
             return False
-        self._state = round(value, 1)
+        if self._data_key in ['illumination', 'lux']:
+            self._state = round(value)
+        else:
+            self._state = round(value, 1)
         return True