diff --git a/main.tf b/main.tf
index 76a5860..aef754b 100644
--- a/main.tf
+++ b/main.tf
@@ -73,7 +73,7 @@ resource "aws_iam_role" "this" {
 ##############################
 
 data "aws_iam_policy_document" "service" {
-  for_each = local.create_role && var.attach_policies_for_integrations ? var.service_integrations : tomap({})
+  for_each = local.create_role && var.attach_policies_for_integrations ? try(tomap(var.service_integrations), var.service_integrations) : tomap({})
 
   dynamic "statement" {
     for_each = each.value
@@ -97,14 +97,14 @@ data "aws_iam_policy_document" "service" {
 }
 
 resource "aws_iam_policy" "service" {
-  for_each = local.create_role && var.attach_policies_for_integrations ? var.service_integrations : tomap({})
+  for_each = local.create_role && var.attach_policies_for_integrations ? try(tomap(var.service_integrations), var.service_integrations) : tomap({})
 
   name   = "${local.role_name}-${each.key}"
   policy = data.aws_iam_policy_document.service[each.key].json
 }
 
 resource "aws_iam_policy_attachment" "service" {
-  for_each = local.create_role && var.attach_policies_for_integrations ? var.service_integrations : tomap({})
+  for_each = local.create_role && var.attach_policies_for_integrations ? try(tomap(var.service_integrations), var.service_integrations) : tomap({})
 
   name       = "${local.role_name}-${each.key}"
   roles      = [aws_iam_role.this[0].name]