diff --git a/assets/js/app.js b/assets/js/app.js
index 5824ca0..731b9a8 100644
--- a/assets/js/app.js
+++ b/assets/js/app.js
@@ -12371,7 +12371,7 @@ function _initBrowserTtsVoices(selectedVoice) {
     sel.innerHTML = '<option value="">— Caricamento voci… —</option>';
 
     const populate = () => {
-        const voices = window.speechSynthesis.getVoices();
+        const voices = (window.speechSynthesis.getVoices() || []).filter(v => v != null && v.lang);
         if (!voices.length) return false;
         // Italian voices first, then others
         const it = voices.filter(v => v.lang.startsWith('it'));