diff --git a/README.md b/README.md
index 42818de..cb3c437 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ nc -lU finalsock
 
 Start the server and client:
 ```
-python -m ntunnel server serverkey unix:$(pwd)/servsock unix:$(pwd)/finalsock
+python -m ntunnel server serverkey --clientkey clientkey.pub unix:$(pwd)/servsock unix:$(pwd)/finalsock
 python -m ntunnel client clientkey serverkey.pub unix:$(pwd)/clientsock unix:$(pwd)/servsock
 ```