Fix #4331
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 3b832b3..3f22048 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -28,6 +28,7 @@
 -  Fixed a bug where :doc:`Session Library <libraries/sessions>` didn't have proper error handling on PHP 5 (due to a PHP bug).
 -  Fixed a bug (#4312) - :doc:`Form Validation Library <libraries/form_validation>` didn't provide error feedback for failed validation on empty requests.
 -  Fixed a bug where :doc:`Database <database/index>` method `version()` returned banner text instead of only the version number with the 'oci8' and 'pdo/oci' drivers.
+-  Fixed a bug (#4331) - :doc:`Database <database/index>` method ``error()`` didn't really work for connection errors with the 'mysqli' driver.
 
 Version 3.0.3
 =============