diff --git a/doc/source/guides/neutron.rst b/doc/source/guides/neutron.rst
index c8b5c44..cac7bb0 100644
--- a/doc/source/guides/neutron.rst
+++ b/doc/source/guides/neutron.rst
@@ -546,6 +546,7 @@
 physical network to bridge name associations with the following syntax:
 
 ::
+
     OVS_BRIDGE_MAPPINGS=net1name:bridge1name,net2name:bridge2name,<...>
 
 Also, ``OVS_BRIDGE_MAPPINGS`` has precedence over ``PHYSICAL_NETWORK`` and