diff --git a/GPy/kern/parts/__init__.py b/GPy/kern/parts/__init__.py
index b1f3e17b..1a01882e 100644
--- a/GPy/kern/parts/__init__.py
+++ b/GPy/kern/parts/__init__.py
@@ -18,7 +18,5 @@ import rbfcos
 import rbf
 import spline
 import symmetric
-import sympy_helpers.cpp
-import sympy_helpers.h
 import sympykern
 import white
diff --git a/GPy/likelihoods/gaussian.py b/GPy/likelihoods/gaussian.py
index 8dbd8863..ef70d414 100644
--- a/GPy/likelihoods/gaussian.py
+++ b/GPy/likelihoods/gaussian.py
@@ -1,5 +1,6 @@
 import numpy as np
 from likelihood import likelihood
+from GPy.util.linalg import jitchol
 
 class Gaussian(likelihood):
     """
@@ -7,7 +8,7 @@ class Gaussian(likelihood):
 
     :param Y: observed output (Nx1 numpy.darray)
     ..Note:: Y values allowed depend on the likelihood_function used
-    :param variance : 
+    :param variance :
     :param normalize:  whether to normalize the data before computing (predictions will be in original scales)
     :type normalize: False|True
     """