diff --git a/README.rst b/README.rst
index 5132fbc..0b52709 100644
--- a/README.rst
+++ b/README.rst
@@ -65,6 +65,7 @@ setup those functions through pillar::
       public_ssh_host_keys:
         mine_function: cmd.run
         cmd: cat /etc/ssh/ssh_host_*_key.pub
+        python_shell: True
       public_ssh_hostname:
         mine_function: grains.get
         key: id