diff --git a/README.md b/README.md
index bd50a38..7d30b46 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # pingtunnel
-	通过伪造ping，把udp流量通过远程服务器转发到目的服务器上。用于突破某些运营商封锁UDP流量。
-	By forging ping, the udp traffic is forwarded to the destination server through the remote server. Used to break certain operators to block UDP traffic.
+    通过伪造ping，把udp流量通过远程服务器转发到目的服务器上。用于突破某些运营商封锁UDP流量。
+    By forging ping, the udp traffic is forwarded to the destination server through the remote server. Used to break certain operators to block UDP traffic.
 
-Usage:
+    Usage:
 
     pingtunnel -type server