diff --git a/backend/src/receipt-import/receipt-import.service.ts b/backend/src/receipt-import/receipt-import.service.ts
index 4bc16ff5..c1481785 100644
--- a/backend/src/receipt-import/receipt-import.service.ts
+++ b/backend/src/receipt-import/receipt-import.service.ts
@@ -84,7 +84,10 @@ export class ReceiptImportService {
       );
     }
 
-    const isPdf = file.mimetype === 'application/pdf';
+    const isPdf =
+      file.mimetype === 'application/pdf' ||
+      file.mimetype === 'application/octet-stream' ||
+      file.originalname?.toLowerCase().endsWith('.pdf');
     const rawItems = isPdf
       ? await this.parseReceiptFromPdf(file.buffer, apiKey)
       : await this.parseReceiptFromImage(file.buffer, file.mimetype, apiKey);