diff --git a/ampel-firmware/co2_sensor.cpp b/ampel-firmware/co2_sensor.cpp
index 07dff010b96d9b9813591d544285ebf4e9409166..fd6c844820d571a30b1a061f0fa74d51906c43a9 100644
--- a/ampel-firmware/co2_sensor.cpp
+++ b/ampel-firmware/co2_sensor.cpp
@@ -102,7 +102,7 @@ namespace sensor {
     Serial.print(getTemperatureOffset());
     Serial.println(F(" K"));
 
-    //FIXME: Actually set auto_calibrate_sensor, depending on the config.
+    //NOTE: scd30.begin() takes care of setting auto-calibration.
     Serial.print(F("Auto-calibration is "));
     Serial.println(config::auto_calibrate_sensor ? "ON." : "OFF.");