diff --git a/README.md b/README.md
index 7de07f2..96e5d53 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ sudo systemctl enable isnd
 ### Installer le client
 
 ````bash
+sudo mkdir /usr/local/lib/isn
 sudo cp -a src/isn/bin/Release/net472/* /usr/local/lib/isn
 sudo chown -R root.root /usr/local/lib/isn
 sudo chmod +x /usr/local/lib/isn/isn.exe