diff --git a/system/internal/repository/user.go b/system/internal/repository/user.go
index 79887e4c8..cc3608bd6 100644
--- a/system/internal/repository/user.go
+++ b/system/internal/repository/user.go
@@ -3,6 +3,7 @@ package repository
 import (
 	"context"
 	"fmt"
+	"io"
 	"time"
 
 	"github.com/jmoiron/sqlx"
@@ -25,6 +26,8 @@ type (
 		Create(mod *types.User) (*types.User, error)
 		Update(mod *types.User) (*types.User, error)
 
+		BindAvatar(user *types.User, avatar io.Reader) (*types.User, error)
+
 		SuspendByID(id uint64) error
 		UnsuspendByID(id uint64) error
 		DeleteByID(id uint64) error
@@ -166,6 +169,15 @@ func (r *user) Update(mod *types.User) (*types.User, error) {
 	return mod, r.db().Replace(r.users, mod)
 }
 
+func (r *user) BindAvatar(user *types.User, avatar io.Reader) (*types.User, error) {
+	if user.Meta == nil {
+		user.Meta = new(types.UserMeta)
+	}
+	// @todo: IMPORTANT: implement avatar uploading
+	user.Meta.Avatar = ""
+	return user, nil
+}
+
 func (r *user) SuspendByID(id uint64) error {
 	return r.updateColumnByID(r.users, "suspend_at", time.Now(), id)
 }