diff --git a/tf/infra.tf b/tf/infra.tf
index b8b0736..da65896 100644
--- a/tf/infra.tf
+++ b/tf/infra.tf
@@ -261,7 +261,7 @@ resource "aws_autoscaling_group" "server" {
 
 resource "aws_lb" "server" {
   name = "riju-server"
-  security_groups = [aws_security_group.alb.name]
+  security_groups = [aws_security_group.alb.id]
   subnets = data.aws_subnet_ids.default.ids
 }