diff --git a/man/kernel-command-line.xml b/man/kernel-command-line.xml
index 6d064f6373..7ff2709fbd 100644
--- a/man/kernel-command-line.xml
+++ b/man/kernel-command-line.xml
@@ -210,6 +210,7 @@
                                 <term><varname>rd.udev.children-max=</varname></term>
                                 <term><varname>udev.exec-delay=</varname></term>
                                 <term><varname>rd.udev.exec-delay=</varname></term>
+                                <term><varname>net.ifnames=</varname></term>
 
                                 <listitem>
                                         <para>Parameters understood by
diff --git a/man/systemd-udevd.service.xml b/man/systemd-udevd.service.xml
index 77b7374886..7fce3000f5 100644
--- a/man/systemd-udevd.service.xml
+++ b/man/systemd-udevd.service.xml
@@ -162,6 +162,8 @@
         </listitem>
       </varlistentry>
     </variablelist>
+    <!-- when adding entries here, consider also adding them
+         in kernel-command-line.xml -->
  </refsect1>
 
  <refsect1><title>Configuration file</title>