diff --git a/clang/docs/StandardCPlusPlusModules.rst b/clang/docs/StandardCPlusPlusModules.rst
index 3aeb55d8f4dad..579431bd9aa32 100644
--- a/clang/docs/StandardCPlusPlusModules.rst
+++ b/clang/docs/StandardCPlusPlusModules.rst
@@ -313,18 +313,8 @@ So all of the following name is not valid by default:
     __test
     // and so on ...
 
-If you still want to use the reserved module names for any reason, currently you can add a special line marker
-in the front of the module declaration like:
-
-.. code-block:: c++
-
-  # __LINE_NUMBER__ __FILE__ 1 3
-  export module std;
-
-Here the `__LINE_NUMBER__` is the actual line number of the corresponding line. The `__FILE__` means the filename
-of the translation unit. The `1` means the following is a new file. And `3` means this is a system header/file so
-the certain warnings should be suppressed. You could find more details at:
-https://gcc.gnu.org/onlinedocs/gcc-3.0.2/cpp_9.html.
+If you still want to use the reserved module names for any reason, use
+``-Wno-reserved-module-identifier`` to suppress the warning.
 
 How to specify the dependent BMIs
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~