diff --git a/Marlin/src/pins/mega/pins_GT2560_V41b.h b/Marlin/src/pins/mega/pins_GT2560_V41b.h
index ce0adc2a396f..d4891d9e2ef5 100644
--- a/Marlin/src/pins/mega/pins_GT2560_V41b.h
+++ b/Marlin/src/pins/mega/pins_GT2560_V41b.h
@@ -51,15 +51,13 @@
  *  X AXIS              Y AXIS               Z1 AXIS            Z0 AXIS
  *    ---                 ---                 ---                 ---
  *   | 1 | 5V            | 1 | 5V            | 1 | 5V            | 1 | 5V
- *   | 2 | 24 X_MIN      | 2 | 28 Y_MIN      | 2 | PE7 Z1_MIN    | 2 | 30 Z0_MIN
+ *   | 2 | 24 X_MIN      | 2 | 28 Y_MIN      | 2 | 80 Z1_MIN    | 2 | 30 Z0_MIN
  *   | 3 | GND           | 3 | GND           | 3 | GND           | 3 | GND
  *    ---                 ---                 ---                 ---
  *     J3                  J4                  J5                  J6
  *
 */
 
-//#define Z1_MIN                             PE7  // Number??
-
 #ifndef X_STOP_PIN
   #ifndef X_MIN_PIN
     #define X_MIN_PIN                         24
@@ -84,6 +82,9 @@
     #define Z_MAX_PIN                         32
   #endif
 #endif
+#ifndef Z2_STOP_PIN
+  #define Z2_STOP_PIN                         80  // PE7 - Extended mega2560 pin
+#endif  
 
 /**                   Filament Runout Sensors
  *
diff --git a/Marlin/src/pins/pins.h b/Marlin/src/pins/pins.h
index f9c2d08ba2b7..6b44d68445c5 100644
--- a/Marlin/src/pins/pins.h
+++ b/Marlin/src/pins/pins.h
@@ -349,7 +349,7 @@
 #elif MB(WEEDO_62A)
   #include "mega/pins_WEEDO_62A.h"                  // ATmega2560                           env:mega2560
 #elif MB(GT2560_V41B)
-  #include "mega/pins_GT2560_V41b.h"                // ATmega2560                           env:mega2560
+  #include "mega/pins_GT2560_V41b.h"                // ATmega2560                           env:mega2560ext
 
 //
 // ATmega1281, ATmega2561