diff --git a/CHANGES/v2.4.md b/CHANGES/v2.4.md
index 1c69af7bd2e49e070ca51c0baaed0b815ad43594..c6b0b94afa1d86592c5b8248f59d3c1eb8f3545b 100644
--- a/CHANGES/v2.4.md
+++ b/CHANGES/v2.4.md
@@ -207,8 +207,7 @@ For users:
   - Fixed some performances regression issue with OpenMP
   - Updated NAMD patches to version 2.12 and 2.13. Old patches have been removed.
   - GROMACS patch for gromacs-2018.4.
-  - Fixed a bug in CS2BACKBONE when using more than 2 chains
-  - Fixed a threadsafety issue using forces on histograms
+  - Fixed a threadsafety issue using forces on \ref HISTOGRAM 
   - Fixed error message suggesting wrong actions (see \issue{421}).
 
 For developers: