diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index 193c4933ca..40f2f7c99a 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -10198,6 +10198,17 @@ system and gives an overview of their function and contents.
       Specifies the timeout in seconds used by the ``watchdog`` recipe and
       also by ``systemd`` during reboot. The default is 60 seconds.
 
+   :term:`WIC_SECTOR_SIZE`
+      The variable :term:`WIC_SECTOR_SIZE` controls the sector size of Wic
+      images. In the background, this controls the value of the
+      ``PARTED_SECTOR_SIZE`` environment variable passed to the ``parted``
+      command-line utility, used to generated the images. The default value is
+      ``512``.
+
+      For more information on how to create Wic images, see the
+      ":ref:`dev-manual/wic:creating partitioned images using wic`" section in
+      the Yocto Project Development Tasks Manual.
+
    :term:`WIRELESS_DAEMON`
       For ``connman`` and ``packagegroup-base``, specifies the wireless
       daemon to use. The default is "wpa-supplicant" (note that the value