[ci skip] Fix patch for #5300
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 1793108..eb879c5 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -9,8 +9,8 @@
 
 -  General Changes
 
-   -  Updated :doc:`Form Validation Library <libraries/form_validation>` rule ``valid_email`` to use ``INTL_IDNA_VARIANT_UCS46`` for non-ASCII domain names.
-   -  Updated :doc:`Email Library <libraries/email>` to use ``INTL_IDNA_VARIANT_UCS46`` for non-ASCII domain names.
+   -  Updated :doc:`Form Validation Library <libraries/form_validation>` rule ``valid_email`` to use ``INTL_IDNA_VARIANT_UTS46`` for non-ASCII domain names.
+   -  Updated :doc:`Email Library <libraries/email>` to use ``INTL_IDNA_VARIANT_UTS46`` for non-ASCII domain names.
    -  Deprecated usage of :doc:`CAPTCHA Helper <helpers/captcha_helper>` function :php:func:`create_captcha()` with parameters other than ``$data``.
 
 Bug fixes for 3.1.7