diff --git a/doc/tuto_GP_regression.rst b/doc/tuto_GP_regression.rst
index f0d11ac1..d468c6aa 100644
--- a/doc/tuto_GP_regression.rst
+++ b/doc/tuto_GP_regression.rst
@@ -147,9 +147,4 @@ The flag ``ARD=True`` in the definition of the Matern kernel specifies that we w
 
     Contour plot of the best predictor (posterior mean).
 
-.. ipython::
-
-   In [136]: x = 2
-
-   In [137]: x**3
-   Out[137]: 8
+Changed it