diff --git a/imperative/drivers/web.rkt b/imperative/drivers/web.rkt
index 19e5b6b..818940f 100644
--- a/imperative/drivers/web.rkt
+++ b/imperative/drivers/web.rkt
@@ -285,6 +285,8 @@
                               (output-response/method conn resp (request-method req))
                               (when (not should-close?)
                                 (do-request))])))))
+     (with-handlers ([exn:fail? (lambda (e) (values #f #f))]) (close-input-port i))
+     (with-handlers ([exn:fail? (lambda (e) (values #f #f))]) (close-output-port o))
      (signal-background-activity! -1))))
 
 (define ((websocket-connection-main id ws-ch) wsc _ws-connection-state)