diff --git a/homeassistant/components/climate/mill.py b/homeassistant/components/climate/mill.py
index 3e8955e2be6..a533cc37fd3 100644
--- a/homeassistant/components/climate/mill.py
+++ b/homeassistant/components/climate/mill.py
@@ -214,5 +214,3 @@ class MillHeater(ClimateDevice):
             await self.async_turn_off()
         else:
             _LOGGER.error("Unrecognized operation mode: %s", operation_mode)
-            return
-        self.schedule_update_ha_state()