diff --git a/fetch.php b/fetch.php
index 492dff5..cf60a68 100644
--- a/fetch.php
+++ b/fetch.php
@@ -87,6 +87,7 @@
             break;
     }
     $file = $book->getFilePath ($type, $idData, true);
-    header('Content-Disposition: attachement; filename="' . basename ($file) . '"');
+    header('Content-Type: application/octet-stream');
+    header('Content-Disposition: attachment; filename="' . basename ($file) . '"');
     header ($config['cops_x_accel_redirect'] . ": " . $config['calibre_internal_directory'] . $file);
 ?>
\ No newline at end of file