diff --git a/webapi/deprecated.go b/webapi/deprecated.go
index 2c16357..85542df 100644
--- a/webapi/deprecated.go
+++ b/webapi/deprecated.go
@@ -243,7 +243,7 @@ type PlatfromCreateAccountReq struct {
 	Username  string `json:"username"`
 	Channel   string `json:"channel"`
 	Nickname  string `json:"nickname"`
-	Avatar    string `json:"Avatar"`
+	Avatar    string `json:"avatar"`
 	Timestamp string `json:"timestamp"`
 }