diff --git a/GPy/kern/__init__.py b/GPy/kern/__init__.py
index 39529843..be19fe98 100644
--- a/GPy/kern/__init__.py
+++ b/GPy/kern/__init__.py
@@ -27,7 +27,7 @@ except ImportError:
 
 if sympy_available:
     from _src.symbolic import Symbolic
-    from _src.eq import Eq
-    from _src.heat_eqinit import Heat_eqinit
+    #from _src.eq import Eq
+    #from _src.heat_eqinit import Heat_eqinit
     #from _src.ode1_eq_lfm import Ode1_eq_lfm
 
diff --git a/GPy/likelihoods/skew_exponential.py b/GPy/likelihoods/skew_exponential.py
index 43708d36..170f5d14 100644
--- a/GPy/likelihoods/skew_exponential.py
+++ b/GPy/likelihoods/skew_exponential.py
@@ -3,7 +3,7 @@
 
 
 import sympy as sym
-from GPy.util.symbolic import normcdfln
+#from GPy.util.symbolic import normcdfln
 import numpy as np
 import link_functions
 from symbolic import Symbolic