diff --git a/Help/variable/CMAKE_LANG_COMPILER_ARCHITECTURE_ID.rst b/Help/variable/CMAKE_LANG_COMPILER_ARCHITECTURE_ID.rst
index 0544e12631..d9a508e1a6 100644
--- a/Help/variable/CMAKE_LANG_COMPILER_ARCHITECTURE_ID.rst
+++ b/Help/variable/CMAKE_LANG_COMPILER_ARCHITECTURE_ID.rst
@@ -11,8 +11,7 @@ architectures in each object file.  For example:
 
 * The build targets an Apple platform with
   :variable:`CMAKE_OSX_ARCHITECTURES` listing multiple architectures.
-* The build targets Windows ARM64 with the MSVC ABI using Clang with
-  the ``-marm64x`` flag.
+* The build targets Windows ARM64 using Clang with the ``-marm64x`` flag.
 
 Possible values for each platform are documented in the following sections.
 
@@ -151,6 +150,9 @@ targets Windows with a GNU ABI (``_WIN32`` and ``__MINGW32__`` are defined).
 ``aarch64``
   ARM 64-bit
 
+``arm64ec``
+  ARM 64-bit Emulation-Compatible
+
 ``armv7``
   ARM 32-bit