diff --git a/ChangeLog b/ChangeLog
index a8a321d6eb..941587517a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2001-03-22  Robert Graham Merkel <rgmerk@mira.net>
+
+	* src/scm/date-utilities.scm (moddate): set is-dst to unknown to
+	hopefully fix daylight-saving time errors.
+
 2001-03-21  Dave Peticolas  <dave@krondo.com>
 
 	* configure.in: take out --enable-gpg argument, is run-time dep
diff --git a/src/scm/date-utilities.scm b/src/scm/date-utilities.scm
index e86a71d9a1..5e0d142df3 100644
--- a/src/scm/date-utilities.scm
+++ b/src/scm/date-utilities.scm
@@ -144,7 +144,7 @@
       (set-tm:mday newtm (op (tm:mday newtm) (tm:mday delta)))
       (set-tm:mon newtm (op (tm:mon newtm) (tm:mon delta)))
       (set-tm:year newtm (op (tm:year newtm) (tm:year delta)))
-
+      (set-tm:isdst newtm -1)
        (let ((time (car (mktime newtm))))
 	 (cons time 0)))))