diff --git a/config.php.in b/config.php.in
index 9eac26ac..3e46d255 100644
--- a/config.php.in
+++ b/config.php.in
@@ -249,6 +249,7 @@ $config['DB_CHARSET'] = 'utf8mb4';
 $config['SPHINX_DRIVER'] = 'sphinx';
 $config['SPHINX_DATABASE'] = 'sphinx';
 $config['SPHINX_HOSTNAME'] = '127.0.0.1:9306';
+$config['SPHINX_HOSTNAME_READONLY'] = '127.0.0.1:9307';
 $config['SPHINX_MAIN_INDEX'] = 'main1,dailydelta1,delta1';
 $config['SPHINX_ATTACHMENT_INDEX'] = 'att1';
 $config['SPHINX_TAG_INDEX'] = 'tag1';