diff --git a/webapp/controller/KefuController.class.php b/webapp/controller/KefuController.class.php
index 6ac84a7..50a220e 100644
--- a/webapp/controller/KefuController.class.php
+++ b/webapp/controller/KefuController.class.php
@@ -23,7 +23,7 @@ class KefuController {
             'port' => $mysql_conf['port'],
             'user' => $mysql_conf['user'],
             'passwd' => $mysql_conf['passwd'],
-            'dbname' => 'kefudb'
+            'dbname' => 'kefudb' . $mysql_conf['instance_id']
         ));
         return $conn;
     }
@@ -161,7 +161,7 @@ class KefuController {
                 'port' => $dbconf['port'],
                 'user' => $dbconf['user'],
                 'passwd' => $dbconf['passwd'],
-                'dbname' => 'kefudb'
+                'dbname' => 'kefudb' .$dbconf['instance_id']
             ));
             $this->sendOneDBInfo($conn);
         }