diff --git a/firmware/esp32/overland-controller/overland-controller.ino b/firmware/esp32/overland-controller/overland-controller.ino
index 11415b4..94d925c 100644
--- a/firmware/esp32/overland-controller/overland-controller.ino
+++ b/firmware/esp32/overland-controller/overland-controller.ino
@@ -2364,7 +2364,7 @@ void buildStatusDocument(JsonDocument& doc) {
             temp["temperature_f"] = sensors.tempsF[i];
         temp["high_alert"] =
             appConfig.tempSensors[i].highAlertEnabled &&
-            sensors.tempOnline[i] &&
+            sensors.tempsF[i] > -100.0 &&
             sensors.tempsF[i] > appConfig.tempSensors[i].highAlertF;
         } else {
             temp["temperature_f"] = nullptr;