diff --git a/edge_deployment/bess_upf_deployment.rst b/edge_deployment/bess_upf_deployment.rst
index 21adb1e..dbf455b 100644
--- a/edge_deployment/bess_upf_deployment.rst
+++ b/edge_deployment/bess_upf_deployment.rst
@@ -86,7 +86,7 @@
 The configuration below is for the example environment.
 Don't forget to replace the IP addresses in the example configuration with the addresses of the actual cluster.
 
-.. code-block:: shell
+.. code-block:: yaml
 
    $ cd $WORKDIR/aether-app-configs/apps/bess-upf/upf1
    $ mkdir overlays/prd-ace-test
@@ -113,7 +113,7 @@
 
 Update ``fleet.yaml`` in the same directory to let Fleet know the custom configuration.
 
-.. code-block:: shell
+.. code-block:: yaml
 
    $ vi fleet.yaml
    # add following block at the end
@@ -126,7 +126,7 @@
          - overlays/prd-ace-test/values.yaml
 
 
-Commit your changes.
+Submit your changes.
 
 .. code-block:: shell