diff --git a/docs/npm.md b/docs/npm.md
index defe7ec..d3ae901 100644
--- a/docs/npm.md
+++ b/docs/npm.md
@@ -24,12 +24,16 @@ dir which matches the npm pkg name so we create one with a symlink and add the
 ~~~~~~~~~~~~~{.sh}
 mkdir build
 cd build
-cmake -DBUILDSWIGNODE=ON  ..
+cmake -DBUILDSWIGNODE=ON -DJSONPLAT=OFF ..
 make npmpkg
 ln -s ../ mraa
 tar hczv --exclude='build*' --exclude='.gitignore' --exclude='.git' --exclude='build*/*' --exclude='.git/*' -f mraa.tar.gz mraa
 ~~~~~~~~~~~~~
 
+You need to disable jsonplatform otherwise you will need to change the
+binding.gyp file to include those sources and make sure target platform has
+json-c headers & libs.
+
 Building with node-gyp
 ----------------------