diff --git a/racket-webview.rkt b/racket-webview.rkt
index 0f750b4..1fddb04 100644
--- a/racket-webview.rkt
+++ b/racket-webview.rkt
@@ -274,6 +274,7 @@
                  (if (or (eq? ext 'html) (eq? ext 'htm))
                      (process-html context file-to-serve out)
                      (process-file context ext file-to-serve out))
+                 (dbg-webview "output to output port had been done")
                  ))
               (response/output
                #:code 404