[ci skip] Fix #4928
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 4f5efe2..1ce3f07 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -25,6 +25,7 @@
- Fixed a bug (#4923) - :doc:`Session Library <libraries/sessions>` could execute an erroneous SQL query with the 'database' driver, if the lock attempt times out.
- Fixed a bug (#4927) - :doc:`Output Library <libraries/output>` method ``get_header()`` returned the first matching header, regardless of whether it would be replaced by a second ``set_header()`` call.
- Fixed a bug (#4844) - :doc:`Email Library <libraries/email>` didn't apply ``escapeshellarg()`` to the while passing the Sendmail ``-f`` parameter through ``popen()``.
+- Fixed a bug (#4928) - the bootstrap file didn't check if *config/constants.php* exists before trying to load it.
Version 3.1.2
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