diff --git a/doc/source/devref/service_extensions.rst b/doc/source/devref/service_extensions.rst
index 3f79d8d9bce..069b59b5d47 100644
--- a/doc/source/devref/service_extensions.rst
+++ b/doc/source/devref/service_extensions.rst
@@ -59,6 +59,7 @@ can be achieved by importing the Neutron Manager and getting a direct
 reference to the core plugin:
 
 .. code:: python
+
    from neutron import manager
 
    plugin = manager.NeutronManager.get_plugin()