diff --git a/README.md b/README.md
index 2add56b7..a09e437b 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,8 @@ gamepads.
 ### Selected pinout
 
 | PSX signal | rp2040 GPIO | Direction | Description |
-| DATA       | 13 | IN | Receive ID, buttons and adc data from controller | 
+| ---------- | ----------- | --------- | ----------- |
+| DATA       | 13 | IN | Receive ID, buttons and adc data from controller |
 | CMD        | 12 | OUT | Send read commands to controller |
 | Attention  | 6 | OUT | Chip select (active low) for controller |
 | Clock      | 5 | OUT | Clock serial communication for DATA/CMD lines |