diff --git a/ice-9/ChangeLog b/ice-9/ChangeLog
index 74fea683d..813ec952e 100644
--- a/ice-9/ChangeLog
+++ b/ice-9/ChangeLog
@@ -1,3 +1,8 @@
+2002-11-03  Marius Vollmer  <mvo@zagadka.ping.de>
+
+	* format.scm (format): Wrap a monitor around format:format since
+	it is not thread-safe.
+
 2002-10-27  Marius Vollmer  <mvo@zagadka.ping.de>
 
 	* threads.scm (%thread-handler): Explicitely return '#f'.  This