diff --git a/ChangeLog b/ChangeLog
index 21920d6312..76a5e90541 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -19,6 +19,7 @@ phpMyAdmin - ChangeLog
 - issue        Backquote phpMyAdmin table name on internal relation delete query for Designer
 - issue #16982 Do not try to delete internal relations if they are not configured
 - issue #16982 Show success messages on Designer for add and remove relation operations
+- issue        Fixed possible "Undefined index: clause_is_unique" on replace value in cell
 
 5.1.1 (2021-06-04)
 - issue #13325 Fixed created procedure shows up in triggers and events and vice-versa