diff --git a/lib/ansible/modules/cloud/openstack/os_object.py b/lib/ansible/modules/cloud/openstack/os_object.py
index 8243f59e4b3..fdc28337f09 100644
--- a/lib/ansible/modules/cloud/openstack/os_object.py
+++ b/lib/ansible/modules/cloud/openstack/os_object.py
@@ -41,7 +41,7 @@ options:
         - Name to be give to the object. If omitted, operations will be on
           the entire container
      required: false
-   file:
+   filename:
      description:
         - Path to local file to be uploaded.
      required: false