diff --git a/readme.md b/readme.md
index 3eaef0b355..38e04233fc 100644
--- a/readme.md
+++ b/readme.md
@@ -33,7 +33,7 @@ If you are on a fairly modern *nix system, the following steps should work:
 $ git clone git://github.com/Araq/Nimrod.git
 $ cd Nimrod
 $ git clone --depth 1 git://github.com/nimrod-code/csources
-$ cd csources && ./build.sh
+$ cd csources && sh build.sh
 $ cd ..
 $ bin/nimrod c koch
 $ ./koch boot -d:release