diff --git a/ChangeLog b/ChangeLog
index 588fa14e4..efda0436a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2005-08-21  Moritz Bunkus  <moritz@bunkus.org>
 
+	* mkvmerge: bug fix: Single digit numbers followed by 's' were not
+	recognized as valid numbers with a unit (e.g. in '--delay 0:9s').
+
 	* Released v1.5.5.
 
 	* mkvtoolnix: Disabled storing AVC/h.264 video tracks in VfW mode.