diff --git a/site/client.balance.go b/site/client.balance.go
index 3861e6f..e5b85cb 100644
--- a/site/client.balance.go
+++ b/site/client.balance.go
@@ -35,7 +35,7 @@ type SiteBalanceType struct {
  * 2021/01/20
  * GZ
  */
-func GetBalanceType(site_id, dbname, url ...string) (*[]SiteBalanceType, error) {
+func GetBalanceType(site_id, dbname string, url ...string) (*[]SiteBalanceType, error) {
 
 	var site_rpc_url string = "127.0.0.1:7971"
 	if len(url) > 0 && url[0] != "" {