diff --git a/docs/en/atom/tail485.md b/docs/en/atom/tail485.md
index 039271da..0b34e208 100644
--- a/docs/en/atom/tail485.md
+++ b/docs/en/atom/tail485.md
@@ -107,8 +107,8 @@
 ### PinMap
 
 <table>
- <tr><td>ATOM</td><td>GPIO26(TX)</td><td>GPIO32(RX)</td><td>5V</td><td>GND</td></tr>
- <tr><td>Tail485</td><td>RX</td><td>TX</td><td>5V</td><td>GND</td></tr>
+ <tr><td>ATOM</td><td>GPIO26</td><td>GPIO32</td><td>5V</td><td>GND</td></tr>
+ <tr><td>Tail485</td><td>TX</td><td>RX</td><td>5V</td><td>GND</td></tr>
 </table>
 
 ## Schematic