diff --git a/doc/web/content/index.md b/doc/web/content/index.md
index f59672b..f8cb984 100644
--- a/doc/web/content/index.md
+++ b/doc/web/content/index.md
@@ -38,9 +38,11 @@ Installation
 The easy way with pip:
 
 ```bash
-pip install patool
+sudo pip install patool
 ```
 
+After that there should exist a ```/usr/bin/patool``` binary.
+
 For Python 2.x you'll need at least Python 2.7, for Python 3.x at least Python 3.3.
 
 If you install from source read the