diff --git a/brewpi.py b/brewpi.py
index 92324cc..da076c4 100755
--- a/brewpi.py
+++ b/brewpi.py
@@ -21,7 +21,7 @@ if __name__ == '__main__':
 	DT_TASK_TRACER = 1.0
 
 	# Sensor
-	sensor = TempSensorFactory.create(config['Controller']['sensor_name'], temp_offset=-0.3)
+	sensor = TempSensorFactory.create(config['Controller']['sensor_name'], temp_offset=-0.15)
 	taskmgr.add(TempSensorTask(sensor, DT_TASK, dispatcher.msgio_get("Sensor")))
 
 	# Plant