diff --git a/homeassistant/components/utility_meter/sensor.py b/homeassistant/components/utility_meter/sensor.py
index a59d51d97e2..a01c53b20e3 100644
--- a/homeassistant/components/utility_meter/sensor.py
+++ b/homeassistant/components/utility_meter/sensor.py
@@ -83,9 +83,9 @@ class UtilityMeterSensor(RestoreEntity):
     @callback
     def async_reading(self, entity, old_state, new_state):
         """Handle the sensor state changes."""
-        if any([old_state is None,
-                old_state.state in [STATE_UNKNOWN, STATE_UNAVAILABLE],
-                new_state.state in [STATE_UNKNOWN, STATE_UNAVAILABLE]]):
+        if old_state is None or new_state is None or\
+                old_state.state in [STATE_UNKNOWN, STATE_UNAVAILABLE] or\
+                new_state.state in [STATE_UNKNOWN, STATE_UNAVAILABLE]:
             return
 
         if self._unit_of_measurement is None and\