diff --git a/carrier-boards/mini-carrier-board/README.md b/carrier-boards/mini-carrier-board/README.md
index f975817..4d315c2 100644
--- a/carrier-boards/mini-carrier-board/README.md
+++ b/carrier-boards/mini-carrier-board/README.md
@@ -83,8 +83,8 @@ The red dot on the plug side denotes Pin 1.
 | Pin Number | Name                 | Direction | Voltage           | Wire Color | Caption                         |
 | ---------- | -------------------- | --------- | ----------------- | ---------- | ------------------------------- |
 | 1          | VCC\_5V              | IN        | 5 V               | RED        | VCC Power Supply To GPS From AP |
-| 3          | SERIAL\_3\_TX        | OUT       | 3.3 V - 5.0 V TTL | BLACK      | UART 3 TX (Transmit Data)       |
-| 2          | SERIAL\_3\_RX        | IN        | 3.3 V - 5.0 V TTL | BLACK      | UART 3 RX (Receive Data)        |
+| 2          | SERIAL\_3\_TX        | OUT       | 3.3 V - 5.0 V TTL | BLACK      | UART 3 TX (Transmit Data)       |
+| 3          | SERIAL\_3\_RX        | IN        | 3.3 V - 5.0 V TTL | BLACK      | UART 3 RX (Receive Data)        |
 | 4          | I2C\_1\_SCL          | IN        | 3.3 V             | BLACK      | I2C 1 Clock Signal              |
 | 5          | I2C\_1\_SDA          | IN/OUT    | 3.3 V             | BLACK      | I2C 1 Serial Data               |
 | 6          | BUTTON               |           | GND               | BLACK      | Signal shorted to GND on press  |