diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index ef21050..54b7bac 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -458,6 +458,10 @@
    Cortex-X2 CPU. This needs to be enabled only for revisions r0p0, r1p0 and
    r2p0 of the CPU, it is fixed in r2p1.
 
+-  ``ERRATA_X2_2081180``: This applies errata 2081180 workaround to
+   Cortex-X2 CPU. This needs to be enabled only for revisions r0p0, r1p0 and
+   r2p0 of the CPU, it is fixed in r2p1.
+
 DSU Errata Workarounds
 ----------------------