diff --git a/README.md b/README.md
index e291ff08..e66a9080 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ cd shadowsocks-libev
 sudo apt-get install build-essential autoconf libtool libssl-dev gawk debhelper
 sudo dpkg-buildpackage
 cd ..
-sudo dpkg -i install shadowsocks*.deb
+sudo dpkg -i shadowsocks*.deb
 ```
 
 #### Configure and start the service