diff --git a/GPy/core/sparse_gp.py b/GPy/core/sparse_gp.py
index 120f0d94..e451b684 100644
--- a/GPy/core/sparse_gp.py
+++ b/GPy/core/sparse_gp.py
@@ -10,8 +10,8 @@ from parameterization.variational import VariationalPosterior
 
 import logging
 from GPy.inference.latent_function_inference.posterior import Posterior
-from GPy.inference.optimization.stochastics import SparseGPStochastics,\
-    SparseGPMissing
+#no stochastics.py file added! from GPy.inference.optimization.stochastics import SparseGPStochastics,\
+    #SparseGPMissing
 logger = logging.getLogger("sparse gp")
 
 class SparseGP(GP):