diff --git a/lib/ansible/modules/cloud/keystone_user.py b/lib/ansible/modules/cloud/keystone_user.py
index 5b412ca800..4af254bfe6 100644
--- a/lib/ansible/modules/cloud/keystone_user.py
+++ b/lib/ansible/modules/cloud/keystone_user.py
@@ -291,6 +291,9 @@ def main():
     argument_spec.update(dict(
             tenant_description=dict(required=False),
             email=dict(required=False),
+            user=dict(required=False),
+            tenant=dict(required=False),
+            password=dict(required=False),
             role=dict(required=False),
             state=dict(default='present', choices=['present', 'absent']),
             endpoint=dict(required=False,