diff --git a/doc/source/conf.py b/doc/source/conf.py
index 4b7577f2..d94aed11 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -22,7 +22,7 @@ import shlex
 #for p in os.walk('../../GPy'):
 #    sys.path.append(p[0])
 sys.path.insert(0, os.path.abspath('../../'))
-#sys.path.insert(0, os.path.abspath('../../GPy/'))
+sys.path.insert(0, os.path.abspath('../../GPy/'))
 
 on_rtd = os.environ.get('READTHEDOCS', None) == 'True'