diff --git a/gui/preload-main.js b/gui/preload-main.js
index 4f719f8a..b8fdbab6 100644
--- a/gui/preload-main.js
+++ b/gui/preload-main.js
@@ -657,8 +657,16 @@ window.addEventListener("DOMContentLoaded", () => {
   hamlib_params = function () {
     var paramList = [];
 
-    var hamlib_deviceid = document.getElementById("hamlib_deviceid").value;
-    paramList = paramList.concat("--model=" + hamlib_deviceid);
+
+
+
+    // hamlib stopbits setting
+    if (document.getElementById("hamlib_deviceid").value !== "-- ignore --") {
+        var hamlib_deviceid = document.getElementById("hamlib_deviceid").value;
+        paramList = paramList.concat("--model=" + hamlib_deviceid);
+    }
+
+
 
     // hamlib deviceport setting
     if (document.getElementById("hamlib_deviceport").value !== "ignore") {
diff --git a/gui/src/index.html b/gui/src/index.html
index a7e3ab80..a84a87f8 100644
--- a/gui/src/index.html
+++ b/gui/src/index.html
@@ -1964,6 +1964,7 @@
                     style="width: 7rem"
                   />
                   <datalist id="datalistOptions">
+                    <option selected value="-- ignore --">-- ignore --</option>
                     <option value="2028">Kenwood TS480</option>
                     <option value="1">Hamlib Dummy</option>
                     <option value="2">Hamlib NET rigctl</option>