diff --git a/src/sonic-yang-models/yang-models/sonic-port-qos-map.yang b/src/sonic-yang-models/yang-models/sonic-port-qos-map.yang
index f4576789a5b5..8f4c2d88f4ed 100644
--- a/src/sonic-yang-models/yang-models/sonic-port-qos-map.yang
+++ b/src/sonic-yang-models/yang-models/sonic-port-qos-map.yang
@@ -85,6 +85,8 @@ module sonic-port-qos-map {
                     type string {
                         pattern "[0-7](,[0-7])?";
                     }
+                    description
+                        "Specify the queue(s) on which software pfc watchdog are enabled.";
                 }
 
                 leaf pfc_to_queue_map {