diff --git a/plugins/inputs/varnish/README.md b/plugins/inputs/varnish/README.md
index 01ab7ac24d1271f40f4ba0c909a710fee7d50a66..8949fe6dbd37a3ca0e103cd28cccde8a00b9c6ae 100644
--- a/plugins/inputs/varnish/README.md
+++ b/plugins/inputs/varnish/README.md
@@ -20,7 +20,7 @@ This plugin gathers stats from [Varnish HTTP Cache](https://varnish-cache.org/)
 
    ## Optional name for the varnish instance (or working directory) to query
    ## Usually appened after -n in varnish cli
-   #name = instanceName
+   # instance_name = instanceName
 ```
 
 ### Measurements & Fields:
diff --git a/plugins/inputs/varnish/varnish.go b/plugins/inputs/varnish/varnish.go
index 7ceb7d2502ceacd16d827a65796d960d9fc04950..f1c7039710e3b4f75d075d69dd67f26813ca6356 100644
--- a/plugins/inputs/varnish/varnish.go
+++ b/plugins/inputs/varnish/varnish.go
@@ -48,7 +48,7 @@ var sampleConfig = `
 
   ## Optional name for the varnish instance (or working directory) to query
   ## Usually appened after -n in varnish cli
-  #name = instanceName
+  # instance_name = instanceName
 `
 
 func (s *Varnish) Description() string {