diff --git a/collects/web-server/http/response.rkt b/collects/web-server/http/response.rkt
index 44e16faf20..2a7868cf33 100644
--- a/collects/web-server/http/response.rkt
+++ b/collects/web-server/http/response.rkt
@@ -125,9 +125,7 @@
 ; format is rfc1123 compliant according to rfc2068 (http/1.1)
 (define (seconds->gmt-string s)
   (let* ([local-date (seconds->date s)]
-         [date (seconds->date (- s
-                                 (date-time-zone-offset local-date)
-                                 (if (date-dst? local-date) 3600 0)))])
+         [date (seconds->date (- s (date-time-zone-offset local-date)))])
     (format "~a, ~a ~a ~a ~a:~a:~a GMT"
             (vector-ref DAYS (date-week-day date))
             (two-digits (date-day date))