diff --git a/GPy/inference/mcmc/__init__.py b/GPy/inference/mcmc/__init__.py
index 956448d4..8f185457 100644
--- a/GPy/inference/mcmc/__init__.py
+++ b/GPy/inference/mcmc/__init__.py
@@ -1 +1 @@
-from hmc import HMC
+from .hmc import HMC
diff --git a/GPy/inference/mcmc/samplers.py b/GPy/inference/mcmc/samplers.py
index ff396a96..6459e8af 100644
--- a/GPy/inference/mcmc/samplers.py
+++ b/GPy/inference/mcmc/samplers.py
@@ -9,7 +9,13 @@ import sys
 import re
 import numdifftools as ndt
 import pdb
-import cPickle
+
+try:
+    #In Python 2, cPickle is faster. It does not exist in Python 3 but the underlying code is always used
+    #if available
+    import cPickle as pickle
+except ImportError:
+    import pickle
 
 
 class Metropolis_Hastings: