diff --git a/stable/telegraf/values.yaml b/stable/telegraf/values.yaml
index b2b4fb56c7..62693bd453 100644
--- a/stable/telegraf/values.yaml
+++ b/stable/telegraf/values.yaml
@@ -37,7 +37,7 @@ daemonset:
       debug: false
       quiet: false
       logfile: ""
-      hostname: ""
+      hostname: "$HOSTNAME"
       omit_hostname: false
     outputs:
       influxdb: