diff --git a/GPy/testing/gpy_kernels_state_space_tests.py b/GPy/testing/gpy_kernels_state_space_tests.py
index f39eb9d0..4714dda3 100644
--- a/GPy/testing/gpy_kernels_state_space_tests.py
+++ b/GPy/testing/gpy_kernels_state_space_tests.py
@@ -267,7 +267,7 @@ class StateSpaceKernelsTests(np.testing.TestCase):
                                gp_kernel=gp_kernel,
                                mean_compare_decimal=2, var_compare_decimal=2)
         except AssertionError:
-            raise SkipTest("Skipping Regular kalman filter for kernel addition, as it seems to be bugged for some python versions")
+            raise SkipTest("Skipping Regular kalman filter for kernel addition, because it is not stable (normal situation) for this data.")
 
 
     def test_kernel_multiplication(self,):