diff --git a/proxy/web/example.html b/proxy/web/example.html
index cafcb3a..aab60da 100644
--- a/proxy/web/example.html
+++ b/proxy/web/example.html
@@ -16,7 +16,9 @@ <h2 style="color:gray;font-family:verdana;">iFrame Example</h2>
     <script>
         // Get Firmware Version
         function showversion() {
-            var pwver = window.location.protocol + "//" + window.location.hostname + ":8675/version";
+            // Get port from the URL
+            var port = window.location.port;
+            var pwver = window.location.protocol + "//" + window.location.hostname + ":" + window.location.port + "/version";
             $.getJSON(pwver, function(data) {
                 var text = `Firmware: ${data.version}`;
                 $(".version").html(text);