diff --git a/lib/ansible/modules/extras/cloud/cloudstack/cs_instance.py b/lib/ansible/modules/extras/cloud/cloudstack/cs_instance.py
index 5202af0d7d6..13cedd041bf 100644
--- a/lib/ansible/modules/extras/cloud/cloudstack/cs_instance.py
+++ b/lib/ansible/modules/extras/cloud/cloudstack/cs_instance.py
@@ -205,6 +205,7 @@ options:
       - If you want to delete all tags, set a empty list e.g. C(tags: []).
     required: false
     default: null
+    aliases: [ 'tag' ]
   poll_async:
     description:
       - Poll async jobs until job has finished.