diff --git a/demo-8/securitygroup.tf b/demo-8/securitygroup.tf
index a9af11f..05c0e12 100644
--- a/demo-8/securitygroup.tf
+++ b/demo-8/securitygroup.tf
@@ -12,7 +12,7 @@ resource "aws_security_group" "allow-ssh" {
   ingress {
       from_port = 22
       to_port = 22
-      protocol = "-1"
+      protocol = "tcp"
       cidr_blocks = ["0.0.0.0/0"]
   } 
 tags {