diff --git a/lib/filestorage/file_storage.php b/lib/filestorage/file_storage.php
index 21779e8233b..9b22b01334a 100644
--- a/lib/filestorage/file_storage.php
+++ b/lib/filestorage/file_storage.php
@@ -1002,7 +1002,7 @@ class file_storage {
         }
 
         if (!isset($file_record['filename'])) {
-            $file_record['filename'] == $file->get_filename();
+            $file_record['filename'] = $file->get_filename();
         }
 
         if (!isset($file_record['mimetype'])) {