diff --git a/lib/ansible/modules/network/nxos/nxos_switchport.py b/lib/ansible/modules/network/nxos/nxos_switchport.py
index d5943cd4762..13bc5f0f419 100644
--- a/lib/ansible/modules/network/nxos/nxos_switchport.py
+++ b/lib/ansible/modules/network/nxos/nxos_switchport.py
@@ -60,7 +60,8 @@ options:
         description:
             - If C(mode=trunk), used as the VLAN range to ADD or REMOVE
               from the trunk.
-        aliases: trunk_add_vlans
+        aliases:
+          - trunk_add_vlans
         required: false
         default: null
     state: