diff --git a/README.md b/README.md
index 87dfdd27f..908e37348 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ How to use
 -------
 <ol>
 <li>Install PhantomJs http://code.google.com/p/phantomjs/wiki/Installation</li>
+<li>Install Java 1.7</li>
 <li>Checkout this repository</li>
 <li>Run the script with the url you want to test: 
 <code>