diff --git a/heicode/controller/heicode_agnet_session.go b/heicode/controller/heicode_agnet_session.go
index c96a3ed..dae4e2a 100644
--- a/heicode/controller/heicode_agnet_session.go
+++ b/heicode/controller/heicode_agnet_session.go
@@ -62,7 +62,7 @@ func defaultHeicodeAuthBaseURL() string {
 
 func jitUsernameFromEmail(email string) string {
 	e := strings.TrimSpace(email)
-	if len(e) <= common.UserNameMaxLength {
+	if len(e) <= model.UserNameMaxLength {
 		return e
 	}
 	sum := sha256.Sum256([]byte(e))