diff --git a/src/ChangeLog b/src/ChangeLog
index 96c0f8ff85ababd8fb4794d01f65e4df63889b7e..3f666a98f358fcfd94c3c68adaa9996534c780af 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -7,7 +7,7 @@
 2010-01-27  Jason Rumney  <jasonr@gnu.org>
 
 	* w32inevt.c (w32_kbd_patch_key): Save the unicode character.
-	(key_event): Use unicode for characters 128 and higher.
+	(key_event): Use unicode for characters 128 and higher (Bug#4567).
 
 2010-01-27  Kenichi Handa  <handa@m17n.org>