diff --git a/Marlin/pins_MEGATRONICS_3.h b/Marlin/pins_MEGATRONICS_3.h
index 1ceb89aab5..2cf0a8907d 100644
--- a/Marlin/pins_MEGATRONICS_3.h
+++ b/Marlin/pins_MEGATRONICS_3.h
@@ -46,8 +46,8 @@
 #define KILL_PIN -1
 
 #define HEATER_0_PIN 2
-#define HEATER_1_PIN 8
-#define HEATER_2_PIN 9
+#define HEATER_1_PIN 9
+#define HEATER_2_PIN 8
 #define HEATER_BED_PIN 10
 #define FAN_PIN 6
 #define FAN2_PIN 7