diff --git a/doc/usage.rst b/doc/usage.rst
index 7f18262f..7129b490 100644
--- a/doc/usage.rst
+++ b/doc/usage.rst
@@ -442,7 +442,7 @@ that converts relative URLs to absolute system paths.
         html  = template.render(Context(data))
  
         # Write PDF to file
-        file = open(os.join(settings.MEDIA_ROOT, 'test.pdf'), "w+b")
+        file = open(os.path.join(settings.MEDIA_ROOT, 'test.pdf'), "w+b")
         pisaStatus = pisa.CreatePDF(html, dest=file,
                 link_callback = link_callback)