diff --git a/doc/guides/tools/proc_info.rst b/doc/guides/tools/proc_info.rst
index e4f0c83f1b..5dd6f9ecae 100644
--- a/doc/guides/tools/proc_info.rst
+++ b/doc/guides/tools/proc_info.rst
@@ -19,7 +19,8 @@ The application has a number of command line options:
 
    ./<build_dir>/app/dpdk-proc-info -- -m | [-p PORTMASK] [--stats | --xstats |
    --stats-reset | --xstats-reset] [ --show-port | --show-tm | --show-crypto |
-   --show-ring[=name] | --show-mempool[=name] | --iter-mempool=name ]
+   --show-ring[=name] | --show-mempool[=name] | --iter-mempool=name |
+   --show-port-private ]
 
 Parameters
 ~~~~~~~~~~
@@ -69,6 +70,9 @@ mempool. For invalid or no mempool name, whole list is dump.
 The iter-mempool parameter iterates and displays mempool elements specified
 by name. For invalid or no mempool name no elements are displayed.
 
+**--show-port-private**
+The show-port-private parameter displays ports private information.
+
 Limitations
 -----------