diff --git a/classes/local/store/s3/client.php b/classes/local/store/s3/client.php
index 31288859..63a177a0 100644
--- a/classes/local/store/s3/client.php
+++ b/classes/local/store/s3/client.php
@@ -604,7 +604,7 @@ private function get_nice_filename($headers) {
 
             if (!empty($originalfilename)) {
                 $result['Content-Disposition'] = $contentdisposition;
-                $result['filename'] = 'filename="' . utf8_encode($originalfilename) . '"';
+                $result['filename'] = 'filename="' . $originalfilename . '"';
                 $result['Content-Type'] = $originalcontenttype;
             }
         }