diff --git a/lib/MeasureUnit/MeasureUnit.cpp b/lib/MeasureUnit/MeasureUnit.cpp
index b7ccdc4..38d8e9e 100644
--- a/lib/MeasureUnit/MeasureUnit.cpp
+++ b/lib/MeasureUnit/MeasureUnit.cpp
@@ -227,7 +227,7 @@ void MeasureUnit::startTemperatureMeasurement()
             averageTemp += _temperatures[i];
           }
         
-          averageTemp /= _thermistorCount;
+          averageTemp /= (double)_thermistorCount;
         
           for(int i(0); i < _thermistorCount; i++)
           {
diff --git a/lib/MeasureUnit/MeasureUnit.ino b/lib/MeasureUnit/MeasureUnit.ino
index b63a9d1..79d5e74 100644
--- a/lib/MeasureUnit/MeasureUnit.ino
+++ b/lib/MeasureUnit/MeasureUnit.ino
@@ -97,9 +97,9 @@ void loop() {
   {
     if(Serial.read() == 'c')
     {
-      Serial.println("********************Starting calibration********************");
-      measureUnit.levelTemperaturesOff();
-      Serial.println("********************Ending calibration********************");
+      //Serial.println("********************Starting calibration********************");
+      measureUnit.levelAsyncTemperaturesOff();
+      //Serial.println("********************Ending calibration********************");
     }
   }
 }