diff --git a/src/components/pdf-processor/ProcessingOptions.tsx b/src/components/pdf-processor/ProcessingOptions.tsx
index d49ec74..cb47be8 100644
--- a/src/components/pdf-processor/ProcessingOptions.tsx
+++ b/src/components/pdf-processor/ProcessingOptions.tsx
@@ -196,8 +196,7 @@ export default function ProcessingOptions({ mode, options, onOptionsChangeAction
         [field]: value,
       };
       const cleanedEntries = Object.entries(nextMeta)
-        .map(([key, val]) => [key, typeof val === 'string' ? val.trim() : ''] as const)
-        .filter(([, val]) => val.length > 0);
+        .filter(([, val]) => typeof val === 'string' && val.length > 0);
 
       onOptionsChangeAction({
         ...options,
diff --git a/src/components/pdf-processor/index.tsx b/src/components/pdf-processor/index.tsx
index b978201..b938063 100644
--- a/src/components/pdf-processor/index.tsx
+++ b/src/components/pdf-processor/index.tsx
@@ -294,9 +294,11 @@ export default function PDFProcessor({ initialMode = 'merge' }: { initialMode?:
       if (operation === 'merge' && processingOptions.metadata?.title) {
         const customTitle = processingOptions.metadata.title.trim();
         if (customTitle) {
-          // Sanitize the custom title to be safe for filenames
-          const sanitizedTitle = customTitle.replace(/[^a-zA-Z0-9-_ ]/g, '').replace(/\s+/g, '_');
-          return ensurePdfExtension(`${sanitizedTitle}_pdflince`);
+          // Sanitize the custom title to be safe for filenames but preserve spaces, accents, &, and ()
+          const sanitizedTitle = customTitle.replace(/[^\p{L}\p{N}\-_ &()]/gu, '').trim();
+          if (sanitizedTitle) {
+            return ensurePdfExtension(sanitizedTitle);
+          }
         }
       }