diff --git a/adminer/select.inc.php b/adminer/select.inc.php
index 8ad42c83..fefc6204 100644
--- a/adminer/select.inc.php
+++ b/adminer/select.inc.php
@@ -189,6 +189,7 @@ if ($_POST && !$error) {
 
 $table_name = $adminer->tableName($table_status);
 if (is_ajax()) {
+	// needs to send headers
 	ob_start('clean_output');
 }
 page_header(lang('Select') . ": $table_name", $error);