diff --git a/backend/app/model/users.go b/backend/app/model/users.go
index 69f566c..9aa2b03 100644
--- a/backend/app/model/users.go
+++ b/backend/app/model/users.go
@@ -110,12 +110,12 @@ func (m *Users) List(ctx context.Context, pagination *requests.Pagination, cond
 }
 
 // Create creates a new user
-func (m *Users) Create(ctx context.Context, userModel *Users) (*Users, error) {
-	userModel.CreatedAt = time.Now()
-	userModel.UpdatedAt = time.Now()
+func (m *Users) Create(ctx context.Context) (*Users, error) {
+	m.CreatedAt = time.Now()
+	m.UpdatedAt = time.Now()
 
 	tbl := table.Users
-	stmt := tbl.INSERT(tbl.MutableColumns).MODEL(userModel).RETURNING(tbl.AllColumns)
+	stmt := tbl.INSERT(tbl.MutableColumns).MODEL(m).RETURNING(tbl.AllColumns)
 	m.log().Infof("sql: %s", stmt.DebugSql())
 
 	var createdUser Users
@@ -256,7 +256,7 @@ func (m *Users) GetUserByOpenIDOrCreate(ctx context.Context, openID string, user
 	user, err := m.GetUserByOpenID(ctx, openID)
 	if err != nil {
 		if errors.Is(err, qrm.ErrNoRows) {
-			user, err = m.Create(ctx, userModel)
+			user, err = userModel.Create(ctx)
 			if err != nil {
 				return nil, errors.Wrap(err, "failed to create user")
 			}