diff --git a/man/sd-login.xml b/man/sd-login.xml
index 83ef0b7307a..374395726f3 100644
--- a/man/sd-login.xml
+++ b/man/sd-login.xml
@@ -148,7 +148,7 @@
     <para>Assignment of hardware devices to seats is managed inside the udev database, via
     settings on the devices:</para>
 
-    <variablelist>
+    <variablelist class='udev-directives'>
       <varlistentry>
         <term>Tag <literal>seat</literal></term>