diff --git a/config.h b/config.h
--- a/config.h
+++ b/config.h
@@ -2,8 +2,8 @@
 #define CONFIG_H
 
 // Temperature sensor type
-//#define MAX31855_TC_SENSOR
-#define MAX31865_RTD_SENSOR
+#define MAX31855_TC_SENSOR
+//#define MAX31865_RTD_SENSOR
 
 
 // Virtual serial port transmit rate