diff --git a/README.md b/README.md
index 1f1914084..c78b84db9 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 A grunt file to reduce the footprint of a MathJax installation
 
+* Fetch a copy of MathJax `wget https://github.com/mathjax/MathJax/archive/master.zip && unzip master.zip`
 * copy & rename the `template` task
 * comment out the components you want to keep (perhaps **counterintuitive**)