diff --git a/modules/quota_manager/main.tf b/modules/quota_manager/main.tf
index eeb9975b..453b4492 100644
--- a/modules/quota_manager/main.tf
+++ b/modules/quota_manager/main.tf
@@ -15,7 +15,7 @@
  */
 
 locals {
-  consumer_quotas = { for index, quota in var.consumer_quotas : "${quota.service}-${quota.metric}" => quota }
+  consumer_quotas = { for index, quota in var.consumer_quotas : "${quota.metric}-${quota.limit}" => quota }
 }
 
 resource "google_service_usage_consumer_quota_override" "override" {