diff --git a/shadowsocks-libev/files/shadowsocks-libev.init b/shadowsocks-libev/files/shadowsocks-libev.init
index 367b68615..7a8fa9efa 100644
--- a/shadowsocks-libev/files/shadowsocks-libev.init
+++ b/shadowsocks-libev/files/shadowsocks-libev.init
@@ -185,9 +185,9 @@ ss_rules() {
 			all_ss_redir_ports=$min_ss_redir_ports
 		fi
 		local_port_tcp="$all_ss_redir_ports"
-		local_port_udp="$all_ss_redir_ports"
+		eval local_port_udp="\$ss_rules_redir_udp_$redir_udp"
 		local_port_tcp6="$all_ss_redir_ports"
-		local_port_udp6="$all_ss_redir_ports"
+		eval local_port_udp6="\$ss_rules6_redir_udp_$redir_udp"
 	else
 		eval local_port_tcp="\$ss_rules_redir_tcp_$redir_tcp"
 		eval local_port_udp="\$ss_rules_redir_udp_$redir_udp"