diff --git a/docs/guides/unity-catalog.md b/docs/guides/unity-catalog.md
index 52c187ff7..61b1bff7d 100644
--- a/docs/guides/unity-catalog.md
+++ b/docs/guides/unity-catalog.md
@@ -262,7 +262,7 @@ resource "aws_iam_policy" "external_data_access" {
 
 resource "aws_iam_role" "external_data_access" {
   name                = local.uc_iam_role
-  assume_role_policy  = data.aws_iam_policy_document.this.json
+  assume_role_policy  = data.databricks_aws_unity_catalog_assume_role_policy.this.json
   managed_policy_arns = [aws_iam_policy.external_data_access.arn]
   tags = merge(var.tags, {
     Name = "${local.prefix}-unity-catalog external access IAM role"