diff --git a/emr/main.tf b/emr/main.tf
index 0ba8949..1c7762b 100644
--- a/emr/main.tf
+++ b/emr/main.tf
@@ -164,7 +164,7 @@ resource "aws_vpc_security_group_ingress_rule" "cidr_block" {
   description       = each.value.description
   from_port         = each.value.from
   to_port           = each.value.to
-  ip_protocol       = each.value.protocol
+  ip_protocol       = each.value.proto
   cidr_ipv4         = each.value.cidr_block
 }