diff --git a/service/charge.go b/service/charge.go
index 36c1427..0b49622 100644
--- a/service/charge.go
+++ b/service/charge.go
@@ -187,9 +187,9 @@ func (c _ChargeService) CancelCharge(seq int64, uid string) error {
 	return nil
 }
 
-func (_ChargeService) updateUserExpiration(tx *bun.Tx, ctx context.Context, uid string, expiration time.Time) error {
+func (ch _ChargeService) updateUserExpiration(tx *bun.Tx, ctx context.Context, uid string, expiration time.Time) error {
 	_, err := tx.NewUpdate().Model((*model.UserDetail)(nil)).
-		Set("service_expiration = ?", expiration).
+		Set("service_expiration = ?", expiration.Format("2006-01-02")).
 		Where("id = ?", uid).
 		Exec(ctx)
 	if err != nil {