diff --git a/README.md b/README.md
index 7ea02de..6138c37 100644
--- a/README.md
+++ b/README.md
@@ -5,4 +5,5 @@ Command line tool for validating Turtle, Ntriples or N3 documents on syntax and
 
 Usage:
 
-node N3Validator.js <path-to-file>
+  npm install n3
+  node N3Validator.js <path-to-file>