diff --git a/config/board.ramps-v1.3.h b/config/board.ramps-v1.3.h
index 3d6bd11..fa550f9 100644
--- a/config/board.ramps-v1.3.h
+++ b/config/board.ramps-v1.3.h
@@ -166,6 +166,7 @@ DEFINE_TEMP_SENSOR(bed,      TT_THERMISTOR, AIO14, THERMISTOR_BED)
 */
 //#define HEATER_PIN DIO5
 //#define HEATER_PIN DIO8
+//#define HEATER_PIN DIO9
 //#define HEATER_PIN DIO10
 
 /** \def DEFINE_HEATER
@@ -199,9 +200,11 @@ DEFINE_TEMP_SENSOR(bed,      TT_THERMISTOR, AIO14, THERMISTOR_BED)
 //DEFINE_HEATERS_START
 DEFINE_HEATER(extruder, DIO10, 1)
 DEFINE_HEATER(bed,      DIO8,  1)
+DEFINE_HEATER(fan,      DIO9,  1)
 
 #define HEATER_EXTRUDER HEATER_extruder
 #define HEATER_BED HEATER_bed
+#define HEATER_FAN HEATER_fan
 //DEFINE_HEATERS_END