diff --git a/doc/conf.py b/doc/conf.py
index 6ebf2684..cf574676 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -32,7 +32,7 @@ class Mock(object):
         else:
             return Mock()
 
-MOCK_MODULES = ['pylab']
+MOCK_MODULES = ['pylab', 'packages.pylab']
 for mod_name in MOCK_MODULES:
     sys.modules[mod_name] = Mock()