diff --git a/ChangeLog b/ChangeLog
index 7bbcafd3e..e5c725add 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2015-12-16  Moritz Bunkus  <moritz@bunkus.org>
 
+        * MKVToolNix GUI: bug fix: the "split mode" drop-down box got
+        reset to "do not split" each time the preferences dialog was
+        closed with the "OK" button. Fixes #1539.
+
         * mkvmerge: enhancement: if JSON identification mode is active
         then warnings and errors will be output as JSON as well. They're
         output as arrays of strings as the keys "warnings" and "errors" of