diff --git a/README.md b/README.md
index 0c16d0a..0966d0a 100644
--- a/README.md
+++ b/README.md
@@ -8,11 +8,11 @@
 
 ```
 JP1
-(○) GPIO0 ➙ GND (Bootloader mode)
-[○] TX    ➙ Programmer's RX
-[○] RX    ➙ Programmer's TX
-[○] VCC   ➙ +3.3V
-[○] GND   ➙ 0V (GND)
+(○) GPIO0      ➙ GND (Bootloader mode)
+[○] TX (GPIO1) ➙ Programmer's RX
+[○] RX (GPIO3) ➙ Programmer's TX
+[○] VCC        ➙ +3.3V
+[○] GND        ➙ 0V (GND)
 ```
 
 ## Schematics