diff --git a/racket-webview.rkt b/racket-webview.rkt
index a505934..c1b58b7 100644
--- a/racket-webview.rkt
+++ b/racket-webview.rkt
@@ -14,6 +14,7 @@
          web-server/servlet-env
          (prefix-in c: net/cookies)
          net/url
+         net/uri-codec
          racket/runtime-path
          racket/file
          racket/string
@@ -701,6 +702,7 @@
     (let* ((idx (string-find file "?")))
       (unless (eq? idx #f)
         (set! file (substring file 0 idx))))
+    (set! file (uri-decode file))
     (let ((f (if (string=? file "/") "index.html" file)))
       (when (string-prefix? f "/")
         (set! f (substring f 1)))