diff --git a/README.md b/README.md
index a88db67..65e4f93 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,10 @@ udp-to-raw-tunnel  (udp to tcp with fake tcp header)
 
 client:
 -A INPUT -s 44.55.66.77/32 -p tcp -m tcp --sport 9999 -j DROP
+
 ./raw -l 127.0.0.1:6666 -r44.55.66.77:9999 -c --source-ip 192.168.1.100
 
 server:
 -A INPUT -p tcp -m tcp --dport 9999 -j DROP
+
 ./raw -l44.55.66.77:9999 -r 127.0.0.1:5555  -s