diff --git a/External-LED.md b/External-LED.md
index 23e3a94..713cda9 100644
--- a/External-LED.md
+++ b/External-LED.md
@@ -18,7 +18,7 @@ Remove the existing PC13 led and solder on your own.
 
 ## Drive the LED from a different PIN
 
-Use an unused pin such as `PA3` to connect the a resistor and LED. 
+Use an unused pin such as `PA0` to connect the a resistor and LED. 
 
 NOTE: You will have to modify and re-flash the software to drive this pin instead.