diff --git a/source/Core/Threads/OperatingModes/CJC.cpp b/source/Core/Threads/OperatingModes/CJC.cpp
index 58f8d5fb..bea6c46f 100644
--- a/source/Core/Threads/OperatingModes/CJC.cpp
+++ b/source/Core/Threads/OperatingModes/CJC.cpp
@@ -5,7 +5,7 @@ void performCJCC(void) {
   // Calibrate Cold Junction Compensation directly at boot, before internal components get warm.
   OLED::refresh();
   osDelay(50);
-  if (!isTipDisconnected() && (TipThermoModel::getTipInC() - getHandleTemperature(0) / 10) < 10) {
+  if (!isTipDisconnected() && abs(int(TipThermoModel::getTipInC() - getHandleTemperature(0) / 10)) < 10) {
     uint16_t setoffset = 0;
     // If the thermo-couple at the end of the tip, and the handle are at
     // equilibrium, then the output should be zero, as there is no temperature