diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 9d0dd5e..f58d7af 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -441,6 +441,11 @@
 -  ``ERRATA_N2_2280757``: This applies errata 2280757 workaround to Neoverse-N2
    CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
 
+For Cortex-X2, the following errata build flags are defined :
+
+-  ``ERRATA_X2_2083908``: This applies errata 2083908 workaround to Cortex-X2
+   CPU. This needs to be enabled for revision r2p0 of the CPU, it is still open.
+
 DSU Errata Workarounds
 ----------------------