diff --git a/monitoring/base/alloy/node-scraper/config.alloy b/monitoring/base/alloy/node-scraper/config.alloy
index acf911f..8b5e228 100644
--- a/monitoring/base/alloy/node-scraper/config.alloy
+++ b/monitoring/base/alloy/node-scraper/config.alloy
@@ -231,7 +231,7 @@ discovery.relabel "kubelet" {
 
  rule {
     source_labels = ["__meta_kubernetes_node_name"]
-    regex         = coalesce(env("HOSTNAME"), constants.hostname)
+    regex         = coalesce(sys.env("HOSTNAME"), constants.hostname)
     action        = "keep"
   }