diff --git a/src/ChangeLog b/src/ChangeLog
index 1a4b962babb..8b24e335fe0 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2001-01-17  Kenichi Handa  <handa@etl.go.jp>
+
+	* fns.c (concat): Be sure to avoid putting the same `composition'
+	property on the adjacent regions.
+
 2001-01-16  Gerd Moellmann  <gerd@gnu.org>
 
 	* window.c (Fset_window_hscroll): Don't set window's min_hscroll