diff --git a/plugins/outputs/mqtt/sample.conf b/plugins/outputs/mqtt/sample.conf
index 50d999d42..9d87e94f1 100644
--- a/plugins/outputs/mqtt/sample.conf
+++ b/plugins/outputs/mqtt/sample.conf
@@ -16,7 +16,7 @@
   ## {{ .TopicPrefix }}/{{ .Hostname }}/{{ .PluginName }}/{{ .Tag "tag_key" }}
   ## (e.g. prefix/web01.example.com/mem/some_tag_value)
   ## Each path segment accepts either a template placeholder, an environment variable, or a tag key
-  ## of the form `{{.Tag "tag_key_name"]]`. Empty path elements as well as special MQTT characters
+  ## of the form `{{.Tag "tag_key_name"}}`. Empty path elements as well as special MQTT characters
   ## (such as `+` or `#`) are invalid to form the topic name and will lead to an error.
   ## In case a tag is missing in the metric, that path segment omitted for the final topic.
   topic = "telegraf/{{ .Hostname }}/{{ .PluginName }}"