diff --git a/README.md b/README.md
index f429f2c61c51b..062126c109d73 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Please configure this fork using the following command:
 
 Afterwards you can build rustc using:
 ```
-x.py build --stage 1 library
+./x.py build --stage 1 library
 ```
 
 Afterwards rustc toolchain link will allow you to use it through cargo: