diff --git a/shadowsocks-libev/files/shadowsocks.conf b/shadowsocks-libev/files/shadowsocks.conf
index 81d2e520d..d6390e2c4 100644
--- a/shadowsocks-libev/files/shadowsocks.conf
+++ b/shadowsocks-libev/files/shadowsocks.conf
@@ -50,4 +50,5 @@ net.ipv4.tcp_mtu_probing = 0
 # Default conntrack is too small
 net.netfilter.nf_conntrack_max=131072
 
-net.ipv4.tcp_ecn=1
\ No newline at end of file
+net.ipv4.tcp_ecn=1
+net.ipv4.tcp_retries2=10
\ No newline at end of file