diff --git a/wv-window.rkt b/wv-window.rkt
index d668259..4ada1f4 100644
--- a/wv-window.rkt
+++ b/wv-window.rkt
@@ -179,17 +179,19 @@
              (js-evt (if (eq? event 'js-evt)
                          (hash-ref (hash-ref evt 'js-evt) 'evt #f)
                          #f))
+             (cms (current-milliseconds))
              )
 
         (unless (and
-                 (> (+ last-event-time 500) (current-milliseconds))
+                 (< cms last-event-time)
                  (eq? last-event-kind event)
                  (or (eq? js-evt #f)
                      (eq? last-js-event js-evt)))
           (dbg-webview "event-handler - evt = ~a" evt)
           (set! last-event-kind event)
           (set! last-js-event js-evt)
-          (set! last-event-time (current-milliseconds)))
+          (set! last-event-time (+ cms 500))
+          )
         
         (cond
         ((eq? event 'resize)