diff --git a/lib/doc/attic/Changelog-Math-LyX_22.txt b/lib/doc/attic/Changelog-Math-LyX_22.txt
index 3c2999ab25..7ba08a5821 100644
--- a/lib/doc/attic/Changelog-Math-LyX_22.txt
+++ b/lib/doc/attic/Changelog-Math-LyX_22.txt
@@ -6,6 +6,14 @@ Modified:
 - sec. 16.1: Spanish only: correct note in the table
 - sec. 18.1: Japanese only: updated paragraph
 
+TODO for LyX 2.2:
+
+- Change http://physics.nist.gov/Document/checklist.pdf
+  to
+  http://physics.nist.gov/Pubs/SP811/sec11.html
+  For details, see:
+  https://www.mail-archive.com/search?l=mid&q=D3F4306A-15DB-4593-81AD-63CCC3EA8B08%40free.fr
+
 New:
 
-- sec. 13.3: new note behind the table
\ No newline at end of file
+- sec. 13.3: new note behind the table