[ci skip] Fix #5627
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index dc07881..ba24698 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -20,6 +20,7 @@
- Fixed a bug (#5587) - :doc:`Database Forge <database/forge>` method ``create_table()`` generated an ``E_WARNING`` message.
- Fixed a bug (#5590) - :doc:`Form Validation Library <libraries/form_validation>` rule **valid_base64** didn't have a default error message.
- Fixed a bug (#5624) - :doc:`Database Library <database/index>` methods ``list_fields()``, ``field_exists()`` returned incorrect results after tables are modified.
+- Fixed a bug (#5627) - :doc:`Database <database/index>` driver 'mysqli' triggered an ``E_WARNING`` message if there's no ``'port'`` specified in the database configuration.
Version 3.1.9
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