diff --git a/Firmware/Configuration_adv.h b/Firmware/Configuration_adv.h
index 75ac0be9..59590b6f 100644
--- a/Firmware/Configuration_adv.h
+++ b/Firmware/Configuration_adv.h
@@ -387,6 +387,12 @@ const unsigned int dropsegments=5; //everything with less than this number of st
  */
 #define EXTENDED_CAPABILITIES_REPORT
 
+/**
+ * Enable M120/M121 G-code commands
+ * 
+ */
+//#define M120_M121_ENABLED  //Be careful enabling and using these G-code commands.
+
 //===========================================================================
 //=============================  Define Defines  ============================
 //===========================================================================
diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 9386e753..09e1dc49 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -6972,19 +6972,21 @@ Sigma_Exit:
       lcd_setstatus(strchr_pointer + 5);
       break;*/
 
+#ifdef M120_M121_ENABLED
     /*!
-	### M120 - Enable endstops <a href="https://reprap.org/wiki/G-code#M120:_Enable_endstop_detection">M120: Enable endstop detection</a>
+    ### M120 - Enable endstops <a href="https://reprap.org/wiki/G-code#M120:_Enable_endstop_detection">M120: Enable endstop detection</a>
     */
     case 120:
       enable_endstops(true) ;
       break;
 
     /*!
-	### M121 - Disable endstops <a href="https://reprap.org/wiki/G-code#M121:_Disable_endstop_detection">M121: Disable endstop detection</a>
+    ### M121 - Disable endstops <a href="https://reprap.org/wiki/G-code#M121:_Disable_endstop_detection">M121: Disable endstop detection</a>
     */
     case 121:
       enable_endstops(false) ;
       break;
+#endif //M120_M121_ENABLED
 
     /*!
 	### M119 - Get endstop states <a href="https://reprap.org/wiki/G-code#M119:_Get_Endstop_Status">M119: Get Endstop Status</a>