diff --git a/package/lean/luci-app-ssr-plus/root/etc/init.d/shadowsocksr b/package/lean/luci-app-ssr-plus/root/etc/init.d/shadowsocksr
index dbbe3cb7ff..6a277ae43e 100755
--- a/package/lean/luci-app-ssr-plus/root/etc/init.d/shadowsocksr
+++ b/package/lean/luci-app-ssr-plus/root/etc/init.d/shadowsocksr
@@ -216,7 +216,7 @@ start_rules() {
 
 start_pdnsd() {
 	local usr_dns="$1"
-  local usr_port="$2"
+	local usr_port="$2"
 
 	local tcp_dns_list="208.67.222.222, 208.67.220.220"
 	[ -z "$usr_dns" ] && usr_dns="8.8.8.8"
@@ -246,6 +246,7 @@ global {
 	neg_domain_pol=on;
 	proc_limit=2;
 	procq_limit=8;
+	par_queries=1;
 }
 server {
 	label= "ssr-usrdns";