diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index def9fda..a8b40ad 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -1340,6 +1340,15 @@
    This flag is used in defining the firmware update metadata structure. This
    flag is by default set to '1'.
 
+- ``PSA_FWU_METADATA_FW_STORE_DESC``: To be enabled when the FWU
+   metadata contains image description. The default value is 1.
+
+   The version 2 of the FWU metadata allows for an opaque metadata
+   structure where a platform can choose to not include the firmware
+   store description in the metadata structure. This option indicates
+   if the firmware store description, which provides information on
+   the updatable images is part of the structure.
+
 --------------
 
 *Copyright (c) 2019-2024, Arm Limited. All rights reserved.*