diff --git a/virtscreen/assets/AppWindow.qml b/virtscreen/assets/AppWindow.qml
index 0ad5f83..992eb8c 100644
--- a/virtscreen/assets/AppWindow.qml
+++ b/virtscreen/assets/AppWindow.qml
@@ -209,8 +209,7 @@ ApplicationWindow {
             TextField {
                 id: passwordFIeld
                 focus: true
-                anchors.left: parent.left
-                anchors.right: parent.right
+                Layout.fillWidth: true
                 placeholderText: "New Password";
                 echoMode: TextInput.Password;
             }
diff --git a/virtscreen/assets/VncOptionsDialog.qml b/virtscreen/assets/VncOptionsDialog.qml
index e047a36..be50f76 100644
--- a/virtscreen/assets/VncOptionsDialog.qml
+++ b/virtscreen/assets/VncOptionsDialog.qml
@@ -12,7 +12,7 @@ Dialog {
     x: (window.width - width) / 2
     y: (window.width - height) / 2 
     width: popupWidth
-    height: 300
+    height: 350
 
     Component.onCompleted: {
         var request = new XMLHttpRequest();
@@ -33,24 +33,44 @@ Dialog {
 
     ColumnLayout {
         anchors.fill: parent
-
-        Repeater {
-            id: vncOptionsRepeater
-            RowLayout {
-                enabled: modelData.available
-                Label {
-                    Layout.fillWidth: true
-                    text: modelData.description + ' (' + modelData.value + ')' 
+        RowLayout {
+            TextField {
+                id: vncCustomArgsTextField
+                enabled: vncCustomArgsCheckbox.checked
+                Layout.fillWidth: true
+                placeholderText: "Custom x11vnc arguments"
+                onTextEdited: {
+                    settings.customX11vncArgs.value = text;
                 }
-                Switch {
-                    checked: modelData.available ? modelData.enabled : false
-                    onCheckedChanged: {
-                        settings.x11vncOptions[modelData.value].enabled = checked;
+                text: vncCustomArgsCheckbox.checked ? settings.customX11vncArgs.value : ""
+            }
+            CheckBox {
+                id: vncCustomArgsCheckbox
+                checked: settings.customX11vncArgs.enabled
+                onToggled: {
+                    settings.customX11vncArgs.enabled = checked;
+                }
+            }
+        }
+        ColumnLayout {
+            enabled: !vncCustomArgsCheckbox.checked
+            Repeater {
+                id: vncOptionsRepeater
+                RowLayout {
+                    enabled: modelData.available
+                    Label {
+                        Layout.fillWidth: true
+                        text: modelData.description + ' (' + modelData.value + ')' 
+                    }
+                    Switch {
+                        checked: modelData.available ? modelData.enabled : false
+                        onCheckedChanged: {
+                            settings.x11vncOptions[modelData.value].enabled = checked;
+                        }
                     }
                 }
             }
         }
-
         RowLayout {
             // Empty layout
             Layout.fillHeight: true
diff --git a/virtscreen/assets/config.default.json b/virtscreen/assets/config.default.json
index f592c1e..3c018c2 100644
--- a/virtscreen/assets/config.default.json
+++ b/virtscreen/assets/config.default.json
@@ -1,5 +1,5 @@
 {
-    "version": "0.2.0",
+    "version": "0.3.0",
     "x11vncVersion": "0.9.15",
     "theme_color": 8,
     "virt": {
@@ -31,5 +31,9 @@
             "arg": null
         }
     },
+    "customX11vncArgs": {
+        "enabled": false,
+        "value": ""
+    },
     "presets": []
 }
\ No newline at end of file
diff --git a/virtscreen/assets/data.json b/virtscreen/assets/data.json
index 30c5938..70c2f33 100644
--- a/virtscreen/assets/data.json
+++ b/virtscreen/assets/data.json
@@ -1,5 +1,5 @@
 {
-    "version": "0.2.0",
+    "version": "0.3.0",
     "x11vncOptions": {
         "-ncache": {
             "value": "-ncache",
diff --git a/virtscreen/assets/main.qml b/virtscreen/assets/main.qml
index 1760b2f..c2c1f74 100644
--- a/virtscreen/assets/main.qml
+++ b/virtscreen/assets/main.qml
@@ -11,6 +11,11 @@ Item {
     property var settings: JSON.parse(backend.settings)
     property bool autostart: settings.vnc.autostart
 
+    function saveSettings () {
+        settings.vnc.autostart = autostart;
+        backend.settings = JSON.stringify(settings, null, 4);
+    }
+
     function createVirtScreen () {
         backend.createVirtScreen(settings.virt.device, settings.virt.width,
                                 settings.virt.height, settings.virt.portrait,
@@ -18,18 +23,8 @@ Item {
     }
 
     function startVNC () {
-        var options = '';
-        var data = settings.x11vncOptions; 
-        for (var key in data) {
-            if(data[key].available && data[key].enabled) {
-                options += key + ' ';
-                if(data[key].arg !== null) {
-                    options += data[key].arg.toString() + ' ';
-                }
-            }
-        }
-        console.log('options: ', options);
-        backend.startVNC(settings.vnc.port, options);
+        saveSettings();
+        backend.startVNC(settings.vnc.port);
     }
 
     function stopVNC () {
@@ -234,8 +229,7 @@ Item {
                 id: quitAction
                 text: qsTr("&Quit")
                 onTriggered: {
-                    settings.vnc.autostart = autostart;
-                    backend.settings = JSON.stringify(settings, null, 4);
+                    saveSettings();
                     backend.quitProgram();
                 }
             }
diff --git a/virtscreen/virtscreen.py b/virtscreen/virtscreen.py
index 91c866e..324f78f 100755
--- a/virtscreen/virtscreen.py
+++ b/virtscreen/virtscreen.py
@@ -457,7 +457,7 @@ class Backend(QObject):
                         value["available"] = True
                     else:
                         value["available"] = False
-                # 2. Default Display settings app for a Desktop Environment
+                # Default Display settings app for a Desktop Environment
                 desktop_environ = os.environ['XDG_CURRENT_DESKTOP'].lower()
                 for key, value in data['displaySettingApps'].items():
                     for de in value['XDG_CURRENT_DESKTOP']:
@@ -569,8 +569,8 @@ class Backend(QObject):
         else:
             self.onError.emit("Failed deleting the password file")
 
-    @pyqtSlot(int, str)
-    def startVNC(self, port, options=''):
+    @pyqtSlot(int)
+    def startVNC(self, port):
         # Check if a virtual screen created
         if not self.virtScreenCreated:
             self.onError.emit("Virtual Screen not crated.")
@@ -606,7 +606,19 @@ class Backend(QObject):
                 self.vncState = self.VNCState.OFF
             print("VNC Exited.")
             atexit.unregister(self.stopVNC)
-
+        # load settings
+        with open(CONFIG_PATH, 'r') as f:
+            config = json.load(f)
+        options = ''
+        if config['customX11vncArgs']['enabled']:
+            options = config['customX11vncArgs']['value']
+        else:
+            for key, value in config['x11vncOptions'].items():
+                if value['available'] and value['enabled']:
+                    options += key + ' '
+                    if value['arg'] is not None:
+                        options += str(value['arg']) + ' '
+        # Sart x11vnc, turn settings object into VNC arguments format
         logfile = open(X11VNC_LOG_PATH, "wb")
         self.vncServer = ProcessProtocol(_onConnected, _onReceived, _onReceived, _onEnded, logfile)
         try:
@@ -856,13 +868,6 @@ def main_cli(args: argparse.Namespace):
         for key, value in tmp_args.items():
             if value:
                 position = key
-    # Turn settings object into VNC arguments format
-    vnc_option = ''
-    for key, value in config['x11vncOptions'].items():
-        if value['available'] and value['enabled']:
-            vnc_option += key + ' '
-            if value['arg'] is not None:
-                vnc_option += str(value['arg']) + ' '
     # Create virtscreen and Start VNC
     def handle_error(msg):
         print('Error: ', msg)
@@ -876,7 +881,7 @@ def main_cli(args: argparse.Namespace):
             sys.exit(0)
     backend.onVncStateChanged.connect(handle_vnc_changed)
     from twisted.internet import reactor  # pylint: disable=E0401
-    backend.startVNC(config['vnc']['port'], vnc_option)
+    backend.startVNC(config['vnc']['port'])
     reactor.run()
 
 if __name__ == '__main__':