diff --git a/custom_components/multimatic/coordinator.py b/custom_components/multimatic/coordinator.py
index 143e777..7c71b31 100644
--- a/custom_components/multimatic/coordinator.py
+++ b/custom_components/multimatic/coordinator.py
@@ -3,6 +3,7 @@
 
 from datetime import timedelta
 import logging
+import math
 
 from pymultimatic.api import ApiError, defaults
 from pymultimatic.model import (
@@ -201,7 +202,9 @@ async def set_hot_water_target_temperature(self, entity, target_temp):
                 hotwater.id, OperatingModes.ON
             )
             hotwater.operating_mode = OperatingModes.ON
-        await self._manager.set_hot_water_setpoint_temperature(hotwater.id, target_temp)
+        await self._manager.set_hot_water_setpoint_temperature(
+            hotwater.id, math.ceil(target_temp)
+        )
         hotwater.target_high = target_temp
 
         await self._refresh(touch_system, entity)