diff --git a/README.md b/README.md
index d4f287d59d3..564d5c00b2a 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ Clone this repo and build the js and css files (you'll need Git and Make install
 
     git clone git://github.com/jquery/jquery-mobile.git
     cd jquery-mobile
+    git submodule update --init
     make
 
 A full version and a minified version of the jQuery Mobile JavaScript and CSS files will be created