diff --git a/locals.tf b/locals.tf
index 26b0d72..ec23f58 100644
--- a/locals.tf
+++ b/locals.tf
@@ -1,15 +1,21 @@
 locals {
   private_subnets = var.serialize_lists ? {
     private_subnets = var.join_lists ? join(",", var.private_subnets) : jsonencode(var.private_subnets)
-  } : length(var.private_subnets) > 1 ? {for k, v in var.private_subnets : "private_subnet_${k + 1}" => v} : {for k, v in var.private_subnets : "private_subnet" => v}
+  } : length(var.private_subnets) > 1 ? {for k, v in var.private_subnets : "private_subnet_${k + 1}" => v} : {
+    for k, v in var.private_subnets : "private_subnet" => v
+  }
 
   public_subnets = var.serialize_lists ? {
     public_subnets = var.join_lists ? join(",", var.public_subnets) : jsonencode(var.public_subnets)
-  } : length(var.public_subnets) > 1 ? {for k, v in var.public_subnets : "public_subnet_${k + 1}" => v} : {for k, v in var.public_subnets : "public_subnet" => v}
+  } : length(var.public_subnets) > 1 ? {for k, v in var.public_subnets : "public_subnet_${k + 1}" => v} : {
+    for k, v in var.public_subnets : "public_subnet" => v
+  }
 
   security_groups = var.serialize_lists ? {
     security_groups = var.join_lists ? join(",", var.security_groups) : jsonencode(var.security_groups)
-  } : length(var.security_groups) > 1 ? {for k, v in var.security_groups : "security_group_${k + 1}" => v} : {for k, v in var.security_groups : "security_group" => v}
+  } : length(var.security_groups) > 1 ? {for k, v in var.security_groups : "security_group_${k + 1}" => v} : {
+    for k, v in var.security_groups : "security_group" => v
+  }
 
   # We're passing vpc_id like that b/c it won't be available yet during Terraform Plan and for_each would fail.
   # The side effect of this would be vpc_id parameter present even if no vpc is used. But who does that nowadays anyway?
@@ -17,7 +23,13 @@ locals {
     vpc_id = var.vpc_id
   }
 
+
   parameters = merge(
-    var.parameters, local.private_subnets, local.public_subnets, local.security_groups, local.vpc
+    { ENV = var.env }
+    var.parameters,
+    local.private_subnets,
+    local.public_subnets,
+    local.security_groups,
+    local.vpc
   )
 }