diff --git a/shadowsocks-libev/files/shadowsocks.conf b/shadowsocks-libev/files/shadowsocks.conf
index ff5f8d24f..05a74d6b3 100644
--- a/shadowsocks-libev/files/shadowsocks.conf
+++ b/shadowsocks-libev/files/shadowsocks.conf
@@ -37,7 +37,7 @@ net.ipv4.tcp_rmem = 4096 87380 134217728
 # TCP write buffer
 net.ipv4.tcp_wmem = 4096 87380 134217728
 # TCP buffer
-#net.ipv4.tcp_mem = 25600 87380 102400
+##net.ipv4.tcp_mem = 25600 87380 102400
 # turn off path MTU discovery
 net.ipv4.tcp_mtu_probing = 0