diff --git a/Doc/conf.py b/Doc/conf.py
index 63fc24e..9314231 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -17,7 +17,7 @@
 # If your extensions are in another directory, add it here.
 _doc_dir = os.path.dirname(__file__)
 sys.path.append(_doc_dir)
-sys.path.append(os.path.join(_doc_dir, '../Lib/'))
+sys.path.insert(0, os.path.join(_doc_dir, '../Lib/'))
 sys.path.insert(0, os.path.join(_doc_dir, '../Lib/ldap'))
 
 # Import fake `_ldap` module