diff --git a/docs/prerequisites.md b/docs/prerequisites.md
index 2a137ed1abaa3494baa56def2e5636f8da815376..8fc9f3e9e7bcca6264ea1db14dd24f2d3e21cec3 100644
--- a/docs/prerequisites.md
+++ b/docs/prerequisites.md
@@ -18,7 +18,7 @@ python-gitlab
     git clone https://github.com/Itxaka/python-gitlab.git
     cd python-gitlab
     git checkout 9c5e375599a6d89ab1f4520224f47b43b40bcf9b
-    python setup.py
+    python setup.py install
 
 You can find the source to git at the [git-core project][5].  For instructions on other platforms see the [Getting Started - Installing Git section of the git book][6].