diff --git a/mission/controller/ThermalController.cpp b/mission/controller/ThermalController.cpp
index 43798fd8..4a4c3469 100644
--- a/mission/controller/ThermalController.cpp
+++ b/mission/controller/ThermalController.cpp
@@ -977,7 +977,7 @@ void ThermalController::ctrlAcsBoard() {
   sensors[3].first = deviceTemperatures.mgm2SideB.isValid();
   sensors[3].second = deviceTemperatures.mgm2SideB.value;
   sensors[4].first = sensorTemperatures.tcsBoard.isValid();
-  sensors[5].second = sensorTemperatures.tcsBoard.value;
+  sensors[4].second = sensorTemperatures.tcsBoard.value;
   numSensors = 5;
   if (selectAndReadSensorTemp()) {
     if (chooseHeater(switchNr, redSwitchNr)) {