diff --git a/doc/Arduino-Mega-USB-UART-wiring.markdown b/doc/Arduino-Mega-USB-UART-wiring.markdown
index 6d47b44..77cc3d9 100644
--- a/doc/Arduino-Mega-USB-UART-wiring.markdown
+++ b/doc/Arduino-Mega-USB-UART-wiring.markdown
@@ -13,5 +13,5 @@ This wiring schema uses only Tx from Arduino and is suitable to be used as stand
 | Signal | ATMega2560 port and pin | Arduino Mega 2560 pin | USB UART converter pin |
 | --- | --- | --- | --- |
 | Ground (GND) | GND | GND | GND |
-| Transmit data  from Arduino (TxD) | PORTJ pin 1 (TXD3) | Digital pin 14 (TX3) | TxD |
+| Transmit data  from Arduino (TxD) | PORTJ pin 1 (TXD3) | Digital pin 14 (TX3) | RxD |