diff --git a/README.md b/README.md
index c205464..14a228a 100644
--- a/README.md
+++ b/README.md
@@ -58,8 +58,8 @@ If you go to the conf folder created the first time you launch the script, you w
 
 first, run the script set-tap.sh to create two bridges.
 ```
-setup_bridge.sh --add-br-id=br0
-setup_bridge.sh --add-br-id=br1
+setup_bridge.sh --addbridge=br0
+setup_bridge.sh --addbridge=br1
 ```
 
 after that change the mac address of all vm in conf folder.