diff --git a/infrastructure/terraform/modules/s3_iam_policy/main.tf b/infrastructure/terraform/modules/s3_iam_policy/main.tf
index bb317302..0ef5c4be 100644
--- a/infrastructure/terraform/modules/s3_iam_policy/main.tf
+++ b/infrastructure/terraform/modules/s3_iam_policy/main.tf
@@ -1,5 +1,6 @@
 # Dynamically build S3 resources list from bucket ARNs and resource paths
 locals {
+  # Generate full resource ARNs by combining bucket ARNs with resource paths
   resources = flatten([
     for bucket_arn in var.bucket_arns : concat(
       [bucket_arn],  # bare ARN for bucket-level actions like ListBucket