diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index 7383f6a1c3de..56f5f8b9836e 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -2943,7 +2943,7 @@ void Temperature::init() {
         temp_range[NR].raw_max -= TEMPDIR(NR) * (OVERSAMPLENR); \
     }while(0)
 
-    #define _MINMAX_TEST(N,M) (HOTENDS > N && TEMP_SENSOR_##NR##_IS_THERMISTOR && defined(HEATER_##N##_##M##TEMP))
+    #define _MINMAX_TEST(N,M) (HOTENDS > N && TEMP_SENSOR_##N##_IS_THERMISTOR && defined(HEATER_##N##_##M##TEMP))
 
     #if _MINMAX_TEST(0, MIN)
       _TEMP_MIN_E(0);