diff --git a/doc/user-guide/section_sdk_nova.xml b/doc/user-guide/section_sdk_nova.xml
index fcb44aa104..50239a9bf5 100644
--- a/doc/user-guide/section_sdk_nova.xml
+++ b/doc/user-guide/section_sdk_nova.xml
@@ -112,7 +112,7 @@ net = nova_client.networks.find(label="private")</programlisting>
             <step>
                 <para>To create the server, use the network, image, and
                     flavor:</para>
-                <programlisting language="python">nics = [{'net-id': net_id}]
+                <programlisting language="python">nics = [{'net-id': net.id}]
 instance = nova_client.servers.create(name="vm2", image=image,
                                       flavor=flavor, key_name="keypair-1", nics=nics)</programlisting>
             </step>