diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index b5ec363..1d4f67a 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -288,6 +288,10 @@
    CPU. This needs to be enabled for revisions r0p0, r1p0, r1p1, and r1p2. It
    is still open.
 
+-  ``ERRATA_A78_2242635``: This applies errata 2242635 workaround to Cortex-A78
+   CPU. This needs to be enabled for revisions r1p0, r1p1, and r1p2. The issue
+   is present in r0p0 but there is no workaround. It is still open.
+
 For Cortex-A78 AE, the following errata build flags are defined :
 
 - ``ERRATA_A78_AE_1941500`` : This applies errata 1941500 workaround to Cortex-A78