diff --git a/custom/custom.tf b/custom/custom.tf
index c1c2d7e..b99e90d 100644
--- a/custom/custom.tf
+++ b/custom/custom.tf
@@ -121,7 +121,7 @@ resource "aws_security_group" "this_security_group" {
     }
   }
 
-  # inress with prefix lists
+  # ingress with prefix lists
   dynamic "ingress" {
     for_each = length(var.ingress_prefix_list_names) > 0 && length(var.ingress_prefix_list_ports) > 0 ? toset(var.ingress_prefix_list_ports) : toset([])
     iterator = p
@@ -130,7 +130,7 @@ resource "aws_security_group" "this_security_group" {
       from_port       = p.value.from
       to_port         = p.value.to
       protocol        = p.value.proto
-      prefix_list_ids = [for pl in data.aws_ec2_managed_prefix_list.inress : pl.id]
+      prefix_list_ids = [for pl in data.aws_ec2_managed_prefix_list.ingress : pl.id]
     }
   }