diff --git a/GPy/testing/test_gpy_kernels_state_space.py b/GPy/testing/test_gpy_kernels_state_space.py
index 154b4378..f2a63392 100644
--- a/GPy/testing/test_gpy_kernels_state_space.py
+++ b/GPy/testing/test_gpy_kernels_state_space.py
@@ -4,7 +4,6 @@
 """
 Testing state space related functions.
 """
-import unittest
 import numpy as np
 import GPy
 import GPy.models.state_space_model as SS_model
diff --git a/GPy/testing/test_inference.py b/GPy/testing/test_inference.py
index 96be2834..34b02ce0 100644
--- a/GPy/testing/test_inference.py
+++ b/GPy/testing/test_inference.py
@@ -5,7 +5,6 @@
 The test cases for various inference algorithms
 """
 
-import unittest
 import numpy as np
 import GPy
 
diff --git a/GPy/testing/test_mapping.py b/GPy/testing/test_mapping.py
index 6b829f06..f3a2f43a 100644
--- a/GPy/testing/test_mapping.py
+++ b/GPy/testing/test_mapping.py
@@ -1,7 +1,6 @@
 # Copyright (c) 2012, 2013 GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
-import unittest
 import numpy as np
 import GPy