diff --git a/GPy/core/parameterization/__init__.py b/GPy/core/parameterization/__init__.py
index ff62a493..fb064c9c 100644
--- a/GPy/core/parameterization/__init__.py
+++ b/GPy/core/parameterization/__init__.py
@@ -6,4 +6,4 @@ from .parameterized import Parameterized
 from . import transformations
 
 from paramz.core import lists_and_dicts, index_operations, observable_array, observable
-from paramz import ties_and_remappings, ObsAr
+from paramz import ObsAr