1 files changed, 8 insertions, 0 deletions

diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml
index 3d00f36104..e417c256a7 100644
--- a/documentation/dev-manual/dev-manual-common-tasks.xml
+++ b/documentation/dev-manual/dev-manual-common-tasks.xml
@@ -4620,6 +4620,14 @@
                             However, the partition is not added to the
                             partition table.
                             </para></listitem>
+                        <listitem><para><emphasis><filename>--extra-space</filename>:</emphasis>
+                            This option is a <filename>wic</filename>-specific
+                            option that adds extra space after the space
+                            filled by the content of the partition.
+                            The final size can go beyond the size specified
+                            by the <filename>--size</filename> option.
+                            The default value is 10 Mbytes.
+                            </para></listitem>
                     </itemizedlist>
                 </para>
             </section>