diff --git a/content/courses/whats-new-in-ada-2022/chapters/introduction.rst b/content/courses/whats-new-in-ada-2022/chapters/introduction.rst
index a40e084be..2358d6297 100644
--- a/content/courses/whats-new-in-ada-2022/chapters/introduction.rst
+++ b/content/courses/whats-new-in-ada-2022/chapters/introduction.rst
@@ -10,17 +10,12 @@ in GNAT Ada compiler.
 To use some of these features, you may need to use a compiler command
 line switch or pragma. Compilers starting with `GNAT Community Edition
 2021`_ or `GCC 11`_ use :ada:`pragma Ada_2022;` or the ``-gnat2022``
-switch.  Older compilers use :ada:`pragma Ada_2020;` or
-``-gnat2020``. To use the square brackets syntax or :ada:`'Reduce`
-expressions, you need :ada:`pragma Extensions_Allowed (On);` or the
-``-gnatX`` switch.
+switch.
 
 References
 ----------
 
 * Draft :aarm22:`Ada 2022 Standard <TTL>`
-* `Ada 202x support in GNAT`_ blog post
 
 .. _`GNAT Community Edition 2021`: https://blog.adacore.com/gnat-community-2021-is-here
 .. _`GCC 11`: https://gcc.gnu.org/gcc-11/
-.. _`Ada 202x support in GNAT`: https://blog.adacore.com/ada-202x-support-in-gnat