diff --git a/lib/doc/attic/Changelog-Math-LyX_22.txt b/lib/doc/attic/Changelog-Math-LyX_22.txt
index 7ba08a5821..8700e1707e 100644
--- a/lib/doc/attic/Changelog-Math-LyX_22.txt
+++ b/lib/doc/attic/Changelog-Math-LyX_22.txt
@@ -8,11 +8,8 @@ Modified:
 
 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: