diff --git a/README.md b/README.md
index f6a080e..2a4df42 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,9 @@ Want to develop slim wiki?
         cd src
         npm install
 
+**Note:** node.js is only used by grunt for the build. Slim wiki uses PHP to run on server-side.
+
+
 
 ### Build instructions