diff --git a/databases/aws-rds/main.tf b/databases/aws-rds/main.tf
index fbefd79..9c94286 100644
--- a/databases/aws-rds/main.tf
+++ b/databases/aws-rds/main.tf
@@ -153,7 +153,7 @@ module "aurora_rds_instance" {
 
 locals {
     
-    type      = (var.engine == "mysql" || var.engine == "mariadb")? "mysql" :  (var.engine == "postgres" || var.engine == "aurora-postgres")? "postgres" : (var.engine == "sqlserver-ex")? "mssql" : null
+    type      = (var.engine == "mysql" || var.engine == "mariadb")? "mysql" :  (var.engine == "postgres" || var.engine == "aurora-postgres")? "postgres" : null
     port4dummy  = (local.aurora)? module.aurora_rds_instance[0].rds_cluster_port : module.common_rds_instance[0].db_instance_port
     host      = (local.aurora)? "${module.aurora_rds_instance[0].rds_cluster_endpoint}:${local.port4dummy}" : module.common_rds_instance[0].db_instance_endpoint
     username  = (local.aurora)? nonsensitive(module.aurora_rds_instance[0].rds_cluster_master_username) : nonsensitive(module.common_rds_instance[0].db_instance_username)