diff --git a/GPy/core/__init__.py b/GPy/core/__init__.py
index 49e9c3c7..6f466652 100644
--- a/GPy/core/__init__.py
+++ b/GPy/core/__init__.py
@@ -1,6 +1,11 @@
 # Copyright (c) 2012-2014, GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
+"""
+This module does...
+
+"""
+
 from GPy.core.model import Model
 from .parameterization import Param, Parameterized
 from . import parameterization