diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 58b0572..256ea4a 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -263,6 +263,9 @@
 -  ``ERRATA_A77_1946167``: This applies errata 1946167 workaround to Cortex-A77
    CPU. This needs to be enabled only for revision <= r1p1 of the CPU.
 
+-  ``ERRATA_A77_1791578``: This applies errata 1791578 workaround to Cortex-A77
+   CPU. This needs to be enabled for r0p0, r1p0, and r1p1, it is still open.
+
 For Cortex-A78, the following errata build flags are defined :
 
 -  ``ERRATA_A78_1688305``: This applies errata 1688305 workaround to Cortex-A78