diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index abd9f87..ccb45a8 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -787,6 +787,10 @@
   Cortex-X3 CPU. This needs to be enabled only for revisions r0p0 and r1p0
   of the CPU, it is fixed in r1p1.
 
+- ``ERRATA_X3_2372204``: This applies errata 2372204 workaround to
+  Cortex-X3 CPU. This needs to be enabled only for revisions r0p0 and r1p0
+  of the CPU, it is fixed in r1p1.
+
 - ``ERRATA_X3_2615812``: This applies errata 2615812 workaround to Cortex-X3
   CPU. This needs to be enabled only for revisions r0p0, r1p0 and r1p1 of the
   CPU, it is still open.