diff --git a/include/ui.js b/include/ui.js
index 25bf162b..8e33672a 100644
--- a/include/ui.js
+++ b/include/ui.js
@@ -55,9 +55,21 @@ start: function(callback) {
     // call twice to get around webkit bug
     WebUtil.selectStylesheet(UI.getSetting('stylesheet'));
 
+    // if port == 80 (or 443) then it won't be present and should be
+    // set manually
+    port = window.location.port;
+    if (!port) {
+        if (window.location.protocol.substring(0,4) == 'http') {            
+            port = 80;
+        }
+        else if (window.location.protocol.substring(0,5) == 'https') {            
+            port = 443;
+        }
+    }
+
     /* Populate the controls if defaults are provided in the URL */
     UI.initSetting('host', window.location.hostname);
-    UI.initSetting('port', window.location.port);
+    UI.initSetting('port', port);
     UI.initSetting('password', '');
     UI.initSetting('encrypt', (window.location.protocol === "https:"));
     UI.initSetting('true_color', true);
diff --git a/vnc_auto.html b/vnc_auto.html
index 064b3899..d8eb0a5a 100644
--- a/vnc_auto.html
+++ b/vnc_auto.html
@@ -122,6 +122,17 @@
             host = WebUtil.getQueryVar('host', window.location.hostname);
             port = WebUtil.getQueryVar('port', window.location.port);
 
+            // if port == 80 (or 443) then it won't be present and should be
+            // set manually
+            if (!port) {
+                if (window.location.protocol.substring(0,4) == 'http') {            
+                    port = 80;
+                }
+                else if (window.location.protocol.substring(0,5) == 'https') {            
+                    port = 443;
+                }
+            }
+
             // If a token variable is passed in, set the parameter in a cookie.
             // This is used by nova-novncproxy.
             token = WebUtil.getQueryVar('token', null);