diff --git a/demo/demo.mjs b/demo/demo.mjs
index 15e1fe3..2949ab6 100644
--- a/demo/demo.mjs
+++ b/demo/demo.mjs
@@ -441,7 +441,8 @@ document.addEventListener('DOMContentLoaded', async () => {
   const params = new URLSearchParams(document.location.search);
   try {
     const stored = JSON.parse(window.localStorage.getItem(LOCALSTORAGE_KEY));
-    g_state.params = new URLSearchParams([...stored.params, ...[...params.entries()]]);
+    g_state.params = new URLSearchParams([...stored.params]);
+    params.entries().forEach(([key, value]) => { g_state.params.set(key, value); });
     g_state.options = stored.options;
   }
   catch {
diff --git a/dist/musicxml-player.esm.js b/dist/musicxml-player.esm.js
index 15ded7e..1a4cb3a 100644
--- a/dist/musicxml-player.esm.js
+++ b/dist/musicxml-player.esm.js
@@ -1,5 +1,5 @@
 /*!
- * musicxml-player v0.18.0
+ * musicxml-player v0.18.1
  * (c) Karim Ratib <karim.ratib@gmail.com> (https://github.com/infojunkie)
  * Released under the GPL-3.0-only License.
  */
@@ -12588,7 +12588,7 @@ const timingObjectConstructor = createTimingObjectConstructor(createCalculateTim
 // @todo Expose an isSupported flag which checks for performance.now() support.
 
 var name = "musicxml-player";
-var version = "0.18.0";
+var version = "0.18.1";
 var description = "A simple JavaScript component that loads and plays MusicXML files in the browser using Web Audio and Web MIDI.";
 var main = "dist/musicxml-player.esm.js";
 var type = "module";
diff --git a/package-lock.json b/package-lock.json
index 80cd976..354adc7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "musicxml-player",
-  "version": "0.18.0",
+  "version": "0.18.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "musicxml-player",
-      "version": "0.18.0",
+      "version": "0.18.1",
       "hasInstallScript": true,
       "license": "GPL-3.0-only",
       "dependencies": {
diff --git a/package.json b/package.json
index 4821f89..80676b7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "musicxml-player",
-  "version": "0.18.0",
+  "version": "0.18.1",
   "description": "A simple JavaScript component that loads and plays MusicXML files in the browser using Web Audio and Web MIDI.",
   "main": "dist/musicxml-player.esm.js",
   "type": "module",