diff --git a/software/erp5testnode/software.cfg b/software/erp5testnode/software.cfg
index b779b97ef8ea32e84831ca51f2ad26dd6c7c706a..c44e0432cfb9781687c4972450777f7cfef1e1c9 100644
--- a/software/erp5testnode/software.cfg
+++ b/software/erp5testnode/software.cfg
@@ -26,6 +26,11 @@ parts =
   zip
   git
 
+# Separate from site eggs
+allowed-eggs-from-site-packages =
+include-site-packages = false
+exec-sitecustomize = false
+
 [bootstrap]
 recipe = zc.recipe.egg
 eggs = zc.buildout