diff --git a/templates/2k11/admin/serendipity_editor.js.tpl b/templates/2k11/admin/serendipity_editor.js.tpl
index ac297300..e221f554 100644
--- a/templates/2k11/admin/serendipity_editor.js.tpl
+++ b/templates/2k11/admin/serendipity_editor.js.tpl
@@ -1426,6 +1426,7 @@ $(function() {
                                 data.append('serendipity[adminAction]', 'add');
                                 data.append('serendipity[token]', $('input[name*="serendipity[token]"]').val());
                                 data.append('serendipity[target_filename][1]', $('input[name*="serendipity[target_filename][1]"]').val());
+                                data.append('serendipity[all_authors]', true);
                                 var type = file.type;
                                 if (type == "image/bmp") {
                                     {* bmp is not supported *}