diff --git a/settings/js/users.js b/settings/js/users.js
index ab08d7099c..01a845367e 100644
--- a/settings/js/users.js
+++ b/settings/js/users.js
@@ -91,13 +91,13 @@ var UserList = {
 		tr.find('td.displayName > span').text(displayname);
 		var groupsSelect = $('<select multiple="multiple" class="groupsselect" data-placehoder="Groups" title="' + t('settings', 'Groups') + '"></select>')
 			.attr('data-username', username)
-			.attr('data-user-groups', [groups]);
+			.data('user-groups', groups);
 		tr.find('td.groups').empty();
 		if (tr.find('td.subadmins').length > 0) {
 			var subadminSelect = $('<select multiple="multiple" class="subadminsselect" data-placehoder="subadmins" title="' + t('settings', 'Group Admin') + '">')
 				.attr('data-username', username)
-				.attr('data-user-groups', [groups])
-				.attr('data-subadmin', [subadmin]);
+				.data('user-groups', groups)
+				.data('subadmin', subadmin);
 			tr.find('td.subadmins').empty();
 		}
 		$.each(this.availableGroups, function (i, group) {