diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml
index f0836e8b1d..dbf493a150 100644
--- a/documentation/dev-manual/dev-manual-common-tasks.xml
+++ b/documentation/dev-manual/dev-manual-common-tasks.xml
@@ -4684,6 +4684,14 @@
                             <filename>APPEND</filename> or
                             <filename>grub</filename> kernel command line.
                             </para></listitem>
+                        <listitem><para><emphasis><filename>--configfile</filename>:</emphasis>
+                            Specifies a user-defined configuration file for
+                            the bootloader.
+                            You can provide a full pathname for the file or
+                            a file that exists in the
+                            <filename>canned-wks</filename> folder.
+                            This option overrides all other bootloader options.
+                            </para></listitem>
                     </itemizedlist>
                 </para>
             </section>