diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index a19d1e397d0b..27ac951472f0 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -710,7 +710,7 @@
  *   998 : Dummy Table that ALWAYS reads 25°C or the temperature defined below.
  *   999 : Dummy Table that ALWAYS reads 100°C or the temperature defined below.
  */
-#define TEMP_SENSOR_0 1
+#define TEMP_SENSOR_0 504
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 0
 #define TEMP_SENSOR_3 0
@@ -718,7 +718,7 @@
 #define TEMP_SENSOR_5 0
 #define TEMP_SENSOR_6 0
 #define TEMP_SENSOR_7 0
-#define TEMP_SENSOR_BED 1
+#define TEMP_SENSOR_BED 505
 #define TEMP_SENSOR_PROBE 0
 #define TEMP_SENSOR_CHAMBER 0
 #define TEMP_SENSOR_COOLER 0