diff --git a/docs/en/development/protocols/vmess.md b/docs/en/development/protocols/vmess.md
index ec98976f7..3038a37ec 100644
--- a/docs/en/development/protocols/vmess.md
+++ b/docs/en/development/protocols/vmess.md
@@ -144,7 +144,7 @@ The header data is encrypted using AES-128-CFB encryption. The IV is MD5 of the
 | ------------------------- | ---------- | ----------- | ---------------- | --------------- | -------------------- |
 | Response Authentication V | Option Opt | Command Cmd | Command Length M | Command Content | Actual Response Data |
 
-其中：
+in which：
 
 - Response Authentication V: must match the response authentication V in the client request.
 - Option Opt: