diff --git a/Variant-USART.md b/Variant-USART.md
index ce96bdd..fb9e167 100644
--- a/Variant-USART.md
+++ b/Variant-USART.md
@@ -2,7 +2,7 @@ This variant can be used to control the board from another board(e.g. Arduino, E
 The example [Arduino sketch](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/tree/master/Arduino/hoverserial) will send commands and process the feedback.
 
 ## Wiring:
-* Connect blue wire to RX, blue wire to TX and black wire to GND of Arduino on right sensor cable(shorter)
+* Connect blue wire to RX, green wire to TX and black wire to GND of Arduino on right sensor cable(shorter)
 
 ⚠ Red wire from sensor cable delivers 15v !!!
 Use 3.3v from programming port, 5v from hall sensor cable, or a voltage regulator.