diff --git a/docs/reference/modules/transport.asciidoc b/docs/reference/modules/transport.asciidoc
index 8a334456e75..f94512896a6 100644
--- a/docs/reference/modules/transport.asciidoc
+++ b/docs/reference/modules/transport.asciidoc
@@ -53,14 +53,15 @@ It also uses the common
 
 Elasticsearch allows you to bind to multiple ports on different interfaces by the use of transport profiles. See this example configuration
 
-```
+[source,yaml]
+--------------
 transport.profiles.default.port: 9300-9400
 transport.profiles.default.bind_host: 10.0.0.1
 transport.profiles.client.port: 9500-9600
 transport.profiles.client.bind_host: 192.168.0.1
 transport.profiles.dmz.port: 9700-9800
 transport.profiles.dmz.bind_host: 172.16.1.2
-```
+--------------
 
 The `default` profile is a special. It is used as fallback for any other profiles, if those do not have a specific configuration setting set.
 Note that the default profile is how other nodes in the cluster will connect to this node usually. In the future this feature will allow to enable node-to-node communication via multiple interfaces.