1 files changed, 1 insertions, 1 deletions
diff --git a/README.md b/README.md
index 7c55157eba..7e3fe88a43 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ for examples and highlights.
 To install spack and your first package, make sure you have Python.
 Then:
 
-    $ git clone https://github.com/spack/spack.git
+    $ git clone -c feature.manyFiles=true https://github.com/spack/spack.git
     $ cd spack/bin
     $ ./spack install zlib