diff --git a/examples/complete/main.tf b/examples/complete/main.tf
index 1acddc1..a04672d 100644
--- a/examples/complete/main.tf
+++ b/examples/complete/main.tf
@@ -62,7 +62,7 @@ module "example" {
   #alicloud_db_instance
   engine               = "MySQL"
   engine_version       = "5.6"
-  rds_instance_type    = data.alicloud_db_instance_classes.default.instance_classes.0.instance_class
+  rds_instance_type    = data.alicloud_db_instance_classes.default.instance_classes.1.instance_class
   instance_storage     = var.instance_storage
   instance_charge_type = var.instance_charge_type
   monitoring_period    = var.monitoring_period