diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index a48a337270..f31a284d81 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -1938,6 +1938,9 @@
     //#define CUSTOM_FIRMWARE_UPLOAD
   #endif
 
+  // "Over-the-air" Firmware Update with M936 - Required to set EEPROM flag
+  //#define OTA_FIRMWARE_UPDATE
+
   /**
    * Set this option to one of the following (or the board's defaults apply):
    *
diff --git a/Marlin/src/gcode/ota/M936.cpp b/Marlin/src/gcode/ota/M936.cpp
index f42d197f4e..353e423c77 100644
--- a/Marlin/src/gcode/ota/M936.cpp
+++ b/Marlin/src/gcode/ota/M936.cpp
@@ -34,7 +34,6 @@
 /**
  * M936: Set one of the OTA update flags.
  *   V2 = Upgrade the motherboard firmware
- *   V3 = Upgrade the RTS controller firmware
  */
 void GcodeSuite::M936() {
   static uint8_t ota_update_flag = 0x00;