diff --git a/monitoring/base/alloy/node-scraper/config.alloy b/monitoring/base/alloy/node-scraper/config.alloy
index efa7ab6..24ae18f 100644
--- a/monitoring/base/alloy/node-scraper/config.alloy
+++ b/monitoring/base/alloy/node-scraper/config.alloy
@@ -318,7 +318,7 @@ prometheus.scrape "kubelet" {
 
  rule {
     source_labels = ["__meta_kubernetes_node_name"]
-    regex         = coalesce(env("HOSTNAME"), constants.hostname)
+    regex         = coalesce(sys.env("HOSTNAME"), constants.hostname)
     action        = "keep"
   }
 
@@ -407,7 +407,7 @@ discovery.relabel "kube_state_metrics" {
 
  rule {
     source_labels = ["__meta_kubernetes_endpoint_node_name"]
-    regex         = coalesce(env("HOSTNAME"), constants.hostname)
+    regex         = coalesce(sys.env("HOSTNAME"), constants.hostname)
     action        = "keep"
   }