diff --git a/docs/en/hat/hat-8servos.md b/docs/en/hat/hat-8servos.md
index b83caa0b..45f17340 100644
--- a/docs/en/hat/hat-8servos.md
+++ b/docs/en/hat/hat-8servos.md
@@ -15,7 +15,7 @@
 - 8-way servo control
 - onboard RGB LED
 - 16340 battery base
-- I2C protocol for comunication and control
+- I2C protocol for comunication and control (0x38)
 
 ## Weight and Size