diff --git a/src/device/boot.rs b/src/device/boot.rs
index 2d2c158..d48e41e 100644
--- a/src/device/boot.rs
+++ b/src/device/boot.rs
@@ -73,8 +73,10 @@ pub fn bootup(
 
     let mut thermostat = Thermostat::new(tec_driver);
     thermostat.setup();
-    thermostat.set_i(ElectricCurrent::new::<ampere>(1.0));
+
     thermostat.power_up();
+    thermostat.calibrate_dac_value();
+    thermostat.set_i(ElectricCurrent::new::<ampere>(1.0));
 
     let mut wd = IndependentWatchdog::new(perif.IWDG);
     wd.start(WATCHDOG_PERIOD.millis());