diff --git a/main.tf b/main.tf
index 8f75b122..92cba992 100644
--- a/main.tf
+++ b/main.tf
@@ -73,6 +73,7 @@ resource "ibm_iam_authorization_policy" "kms_policy" {
 
 # workaround for https://github.com/IBM-Cloud/terraform-provider-ibm/issues/4478
 resource "time_sleep" "wait_for_authorization_policy" {
+  count      = var.existing_sm_instance_crn == null ? 1 : 0
   depends_on = [ibm_iam_authorization_policy.kms_policy, ibm_iam_authorization_policy.en_policy]
 
   create_duration = "30s"