diff --git a/docs/changelog/6.x.x.txt b/docs/changelog/6.x.x.txt
index 2ffe21994..7f18ba8af 100644
--- a/docs/changelog/6.x.x.txt
+++ b/docs/changelog/6.x.x.txt
@@ -25,3 +25,5 @@
  - Bugfix 859816 : DataForm - security issues. Tnx Gabor for reporting.
  - ^t; now starts in current root rather then in site root.
  - Added new Authentication System.
+ - Collateral macros now return undef instead of the macro tag when no
+   matching collateral is found.