diff --git a/openmptcprouter/files/etc/uci-defaults/1930-omr-shadowsocks b/openmptcprouter/files/etc/uci-defaults/1930-omr-shadowsocks
index 20c67716d..72dc4ede9 100755
--- a/openmptcprouter/files/etc/uci-defaults/1930-omr-shadowsocks
+++ b/openmptcprouter/files/etc/uci-defaults/1930-omr-shadowsocks
@@ -9,7 +9,7 @@ if [ "$NBCPU" -gt 2 ]; then
 				set shadowsocks-libev.hi$c.server=sss0
 				set shadowsocks-libev.hi$c.local_address="0.0.0.0"
 				set shadowsocks-libev.hi$c.local_port=1100
-				set shadowsocks-libev.hi$c.mode=tcp_and_udp
+				set shadowsocks-libev.hi$c.mode=tcp
 				set shadowsocks-libev.hi$c.timeout=600
 				set shadowsocks-libev.hi$c.fast_open=1
 				set shadowsocks-libev.hi$c.reuse_port=1
diff --git a/shadowsocks-libev/files/shadowsocks-libev.config b/shadowsocks-libev/files/shadowsocks-libev.config
index ddb587807..0e601c911 100644
--- a/shadowsocks-libev/files/shadowsocks-libev.config
+++ b/shadowsocks-libev/files/shadowsocks-libev.config
@@ -2,7 +2,7 @@ config ss_redir hi
 	option server 'sss0'
 	option local_address '::'
 	option local_port '1100'
-	option mode 'tcp_and_udp'
+	option mode 'tcp'
 	option timeout '600'
 	option fast_open 1
 	option verbose 0
@@ -16,7 +16,7 @@ config ss_redir hi2
 	option server 'sss0'
 	option local_address '0.0.0.0'
 	option local_port '1100'
-	option mode 'tcp_and_udp'
+	option mode 'tcp'
 	option timeout '600'
 	option fast_open 1
 	option verbose 0