diff --git a/doc/networking-guide/source/scenario_legacy_lb.rst b/doc/networking-guide/source/scenario_legacy_lb.rst
index 5f5d999423..8f5f2c0f00 100644
--- a/doc/networking-guide/source/scenario_legacy_lb.rst
+++ b/doc/networking-guide/source/scenario_legacy_lb.rst
@@ -650,7 +650,7 @@ Compute nodes
 
 #. Load the new kernel configuration:
 
-   .. code-block: console
+   .. code-block:: console
 
       $ sysctl -p
 
@@ -945,7 +945,7 @@ Verify network operation
 #. Create the appropriate security group rules to allow ping and SSH access
    to the instance. For example:
 
-   .. code-block: console
+   .. code-block:: console
 
      $ nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0
       +-------------+-----------+---------+-----------+--------------+