diff --git a/pid/buildjson.cpp b/pid/buildjson.cpp
index 97f2bf0..b620439 100644
--- a/pid/buildjson.cpp
+++ b/pid/buildjson.cpp
@@ -86,7 +86,7 @@
 
         /* TODO: using at() throws a specific exception we can catch */
         id = zone["id"];
-        thisZoneConfig.minThermalRpm = zone["minThermalRpm"];
+        thisZoneConfig.minThermalOutput = zone["minThermalOutput"];
         thisZoneConfig.failsafePercent = zone["failsafePercent"];
 
         auto pids = zone["pids"];