diff --git a/lib/pear/readme_moodle.txt b/lib/pear/readme_moodle.txt
index 9c10c9ffbd6..cf8ee626f68 100644
--- a/lib/pear/readme_moodle.txt
+++ b/lib/pear/readme_moodle.txt
@@ -41,6 +41,8 @@ MDL-78145 - PHP 8.2 compliance. Added a missing class property that still need t
 MDL-78527 - Adding a sixth parameter to allow groups to use attributes.
 MDL-80818 - Freezing all elements with the same name (e.g. radio buttons)
 MDL-80820 - PHPdocs corrections
+MDL-85820 - Remove unnecessary `-` character beside each client validation error message for consistency with the server side
+            validation error messages.
 
 Pear
 ====