diff --git a/website/usage/_install/_quickstart.jade b/website/usage/_install/_quickstart.jade
index f2d4383a4..976e7d4ad 100644
--- a/website/usage/_install/_quickstart.jade
+++ b/website/usage/_install/_quickstart.jade
@@ -16,7 +16,9 @@
 
     +qs({package: 'source'}) git clone https://github.com/explosion/spaCy
     +qs({package: 'source'}) cd spaCy
-    +qs({package: 'source'}) export PYTHONPATH=`pwd`
+    +qs({package: 'source', os: 'mac'}) export PYTHONPATH=`pwd`
+    +qs({package: 'source', os: 'linux'}) export PYTHONPATH=`pwd`
+    +qs({package: 'source', os: 'windows'}) set PYTHONPATH=/path/to/spaCy
     +qs({package: 'source'}) pip install -r requirements.txt
     +qs({package: 'source'}) python setup.py build_ext --inplace