diff --git a/demo-5/securitygroup.tf b/demo-5/securitygroup.tf
index 4de36a9..e215278 100644
--- a/demo-5/securitygroup.tf
+++ b/demo-5/securitygroup.tf
@@ -10,7 +10,7 @@ resource "aws_security_group" "from_europe" {
     from_port   = "443"
     to_port     = "443"
     protocol    = "tcp"
-    cidr_blocks = data.aws_ip_ranges.european_ec2.cidr_blocks
+    cidr_blocks = slice(data.aws_ip_ranges.european_ec2.cidr_blocks, 0, 50)
   }
   tags = {
     CreateDate = data.aws_ip_ranges.european_ec2.create_date