diff --git a/renderer/app.js b/renderer/app.js
index 67852b5..1c095dd 100644
--- a/renderer/app.js
+++ b/renderer/app.js
@@ -1200,12 +1200,13 @@ function askLegacyBackupPassword() {
 }
 
 async function doBackupImport(legacyPassword) {
+  const pw = typeof legacyPassword === 'string' ? legacyPassword : undefined;
   try {
-    const result = await window.api.importBackup(legacyPassword);
+    const result = await window.api.importBackup(pw);
     if (!result || result.canceled) return;
     if (result.needsPassword) {
-      const pw = await askLegacyBackupPassword();
-      if (pw) doBackupImport(pw);
+      const entered = await askLegacyBackupPassword();
+      if (entered) doBackupImport(entered);
       return;
     }
     if (result.ok) {
@@ -2311,8 +2312,8 @@ function renderSettings() {
     arrow.innerHTML = isOpen ? '▶' : '▼';
   });
 
-  document.getElementById('exportBackupBtn').addEventListener('click', doBackupExport);
-  document.getElementById('importBackupBtn').addEventListener('click', doBackupImport);
+  document.getElementById('exportBackupBtn').addEventListener('click', () => doBackupExport());
+  document.getElementById('importBackupBtn').addEventListener('click', () => doBackupImport());
 
   // --- Separator before hoster panels ---
   const separator = document.createElement('div');