diff --git a/doc/source/tutorial/faq.rst b/doc/source/tutorial/faq.rst
index e82d0f1835dae934b8b633d8363802354581cbc9..975b9dd07fd467e6da18e8e4735a26d77e1f2505 100644
--- a/doc/source/tutorial/faq.rst
+++ b/doc/source/tutorial/faq.rst
@@ -639,6 +639,8 @@ unintuitive orderings:
 .. jupyter-execute::
     :hide-code:
 
+    lat = kwant.lattice.square(norbs=2)
+
     s0 = np.eye(2)
     sz = np.array([[1, 0], [0, -1]])