NPM Installs Package Outside Current Directory

NPM Installs Package Outside Current Directory

I try to install express package using npm from inside
/home/iwan/my-project directory:
npm install express
express@3.3.7 ../node_modules/express
„¥„Ÿ„Ÿ methods@0.0.1
„¥„Ÿ„Ÿ cookie-signature@1.0.1
„¥„Ÿ„Ÿ range-parser@0.0.4
„¥„Ÿ„Ÿ fresh@0.2.0
„¥„Ÿ„Ÿ buffer-crc32@0.2.1
„¥„Ÿ„Ÿ cookie@0.1.0
„¥„Ÿ„Ÿ debug@0.7.2
„¥„Ÿ„Ÿ send@0.1.4 (mime@1.2.11)
„¤„Ÿ„Ÿ commander@1.2.0 (keypress@0.1.0)
The strange thing is npm doesn't install express package in current dir
(/home/iwan/my-project/node_modules/express), but in
/home/iwan/node_modules/express.
Did i miss something?