diff --git a/terraform/gcp/modules/monitoring/prober/variables.tf b/terraform/gcp/modules/monitoring/prober/variables.tf
index 1541c997..132186fd 100644
--- a/terraform/gcp/modules/monitoring/prober/variables.tf
+++ b/terraform/gcp/modules/monitoring/prober/variables.tf
@@ -67,9 +67,9 @@ variable "fulcio_probed_endpoints" {
 
 locals {
   notification_channels  = toset([for nc in var.notification_channel_ids : format("projects/%v/notificationChannels/%v", var.project_id, nc)])
-  fulcio_endpoint_filter = format("metric.labels.endpoint = oneof(\"%s\")", join("\", \"", var.fulcio_probed_endpoints))
-  rekor_endpoint_filter  = format("metric.labels.endpoint = oneof(\"%s\")", join("\", \"", var.rekor_probed_endpoints))
-  all_endpoints_filter   = format("metric.labels.endpoint = oneof(\"%s\")", join("\", \"", distinct(concat(var.rekor_probed_endpoints, var.fulcio_probed_endpoints))))
+  fulcio_endpoint_filter = format("metric.labels.endpoint = one_of(\"%s\")", join("\", \"", var.fulcio_probed_endpoints))
+  rekor_endpoint_filter  = format("metric.labels.endpoint = one_of(\"%s\")", join("\", \"", var.rekor_probed_endpoints))
+  all_endpoints_filter   = format("metric.labels.endpoint = one_of(\"%s\")", join("\", \"", distinct(concat(var.rekor_probed_endpoints, var.fulcio_probed_endpoints))))
   hosts = [{
     host            = var.fulcio_url
     endpoint_filter = local.fulcio_endpoint_filter