diff --git a/eventbridge.guardduty.tf b/eventbridge.guardduty.tf
index 41f4d9a..cbf94ad 100644
--- a/eventbridge.guardduty.tf
+++ b/eventbridge.guardduty.tf
@@ -76,7 +76,7 @@ module "eventbridge_guardduty" {
       event_pattern = jsonencode({
         "source"      = ["aws.guardduty"]
         "detail-type" = ["GuardDuty Malware Protection Object Scan Result"]
-        "resources"   = [format("%v/*", [module.files_in.s3_bucket_arn])]
+        "resources"   = [format("%v/*", module.files_in.s3_bucket_arn)]
       })
     }
   }