diff --git a/CHANGES/v2.3.txt b/CHANGES/v2.3.txt
index a612e95c2d933d959d9864e4c9d4051f980e2746..b8b36e4341ce2396cd0183370797b6cd2175b8ed 100644
--- a/CHANGES/v2.3.txt
+++ b/CHANGES/v2.3.txt
@@ -158,6 +158,7 @@ See branch \branch{v2.3} on git repository.
 - Fixed bug in \ref HBONDS that used to apear when you used DONORNS and ACCEPTORS with same numbers of atoms 
 - Fixed bug in \ref DISTANCES that appears when using BETWEEN and link cells.
 - Prevented users from causing segfaults by storing derivatives without LOWMEM flag.  In these caess PLUMED crashes with meaningful errors.
+- Fixed bug in \ref HISTOGRAM that causes nans when using KERNEL=DISCRETE option
 
 For developers:
 - plumedcheck validation has been made stricter. All the checks are now described in the developer manual.